Your pov:
I woke up on a bed.

"I knew it was too good to be true." I groaned

But then I got a good look at my surroundings...Holy shiitu.

I was in Sam Winchester's room.

That's when I see Sam at his desk on his laptop. Earbuds in?

That's new he's never used those on the show.

But then again! Holy shit I was in Sam's room. 

I kept pinching myself. "Yep, it's real it's real," I say.

My inner fangirl was flipping!

San took out his earbuds and looked at me.

"Good you're up I need you to explain somethings."

"Um ok?"

"So earlier you were talking about some theory can you explain that theory maybe we can find a way to get you home."

"Oh, the parallel earth theory! Bit of a nerd. the parallel earth theory is the theory that there are many different kinds of earths with different versions of you! In my universe, you're not real but you are one of the main characters on a very popular tv show called supernatural! You are played by a very ho- I mean very talented actor named Jared Padalecki wait a minute why am I explaining this to you?you lived this!"

"What?"

"You don't remember having to fight off somebody and then being thrown into a window to end up in a parallel universe?"

"Not that I can recall. No."

"Well in my universe you are played by an actor called Jared Padalecki Dean played by Jensen Ackles and Castiel played by Misha Collins."

"Wow, that's a lot to remember."

"Not for a fangirl in my universe you got married and had kids with Genevieve she played Ruby and Misha had cute kid  named Wes sooo cute oh and Jensen got married and he's havi-"

"Wait a minute I got married to ruby?!"

"Yea but tom and shep are just soooo cute!" I squeal sam shuddered. "Oh sorry um well that's all I wait a flippin minute...but that wouldn't make sense!"

"What wouldn't make sense?"

"Ok, so do you know the superhero the flash supersonic like speed?"

"Yes, why?"

"Ok, so there is a show on it where a villain from a parallel universe came to Barry Allen's universe through a portal I don't remember all of the science behind it but it doesn't make sense because I don't remember going through a portal yet alone seeing or making one! Dammit, I didn't even get to finish that season!"

"You get very easily sidetracked its funny."  he chuckles.

"Quiet samsquatch!"

"That's one name I haven't been called. Well I've been trying to figure out how to get you home it hasn't been working out so well that means you'll have to sleep here for the night in this alternate universe."

"Please point me to my room sir!" I joke.

He smiles and leads me to a bare room with a desk, a bed, two night stands on each side of the bed and two lamps on each nightstand.

I fall on the bed. "Thank you."

"No problem you're literally right next to me so I

 guess knock on the well if you need anything."

"Ok."

So he left.

I felt my back pocket. I had my phone thank god. But some of the stuff I had on it was gone! The supernatural show quizzes my beautiful wallpaper of Sam, Dean and Cas was my old Doctor Who wallpaper.
I had to get the wifi password.
I knock on the wall.

"Sam!"

"Yes?!" he answered.

"Whats the password for the wifi?!"

"Come here!"

I sigh and go into his room.

"Whats the wifi passcode? I want to watch stuff on my phone!"

"Umm...don't laugh too loud I did this just to piss off dean after a case we worked.When we seen some high schoolers make a musical based off of Chuck's book."

"Ok? I remember that episode well god I hate this you know what I mean."

"Destielisreal." he snickered.

I covered my mouth to keep from laughing still I snickered. Then we both ended up laughing.
"I got to hand it to you that is probably one of the best pranks you've ever pulled!" I give him high five.

"I planned on changing but-"

"The hunt never stops."I finish.

"Yea, well you better go to sleep you and I have to get up early tomorrow we have a lot to do."

"We Do?" I questioned.

"Yes, we do we have to keep looking for ways to get you home to your earth and dean won't help because he's busy trying to figure out who kidnapped me with my mom....that feels so weird to say."

"It must be... I don't know how I would feel if my mom came back to life."

"Your mom died?"

"Yea of natural causes though."

"Or did she?" he joked.

"No just no you are not gonna turn me into one of those super serious supernatural fans who literally use salt to protect themselves!" I say pointing playfully.

He laughed."I'm joking I'm sorry about your mom though."

"Its ok it was a loong time ago she died giving birth to me."

I type in the wifi passcode." well thanks for telling me the passcode I must get going."

"Ok."

I go into my room and get on twitter
Jared, Jensen, Misha, Mark and all the other cast and crew members were no longer on twitter. I tried to look them up they weren't even any search results!
I go on Netflix and look for something good to watch I end up watching clue. Old mystery movie. At some point, I fell asleep.

The next day...

Sam and I were sitting on a park bench cuddling he looked at me and brought his face closer to mine and...

"(Y/n)!" somebody yelled.

I shot up and looked around the room in panic to see sam in the doorway.

"Bobdammit sam you scared me!"

"Sorry follow me I need to take you somewhere."

"Ok." I follow him into the shooting range.

"So its pretty obvious until we find a way to get you home you're kinda stuck with us soo obviously-"

"Get to the point moose!"

"You gotta learn to protect yourself."

"But I shot those two kidnappers."

"Those was called lucky shots next time you might not be so lucky and what happens when somebody from a parallel universe dies we don't know and we don't wanna know."

"My relative guess is maybe it messes up the timeline on my earth."

"Quite the nerd aren't you?" he asked.

I blushed. "No!....maybe....yes very much so i cant help it science is soooo awesome!"

He laughs."don't worry I never said there was anything wrong with it I just think it's cute."

I blushed.

"Um anyways lets practice your aim," he says.

He helps me learn how to use the gun telling me about the safety even though I've repeatedly told him I knew about guns.

So we were practicing aim once again.

"Align your body with the gun." Sam says.

"Whaaat?"

He chuckled."like this." he places his hands on my hips and moves me a bit but our bodies were extremely close. I could feel the heat from his radiating on my back.

I blushed.

Sam automatically removed his hands immediately and cleared his throat. "So now relax, take aim and shoot," he says stepping back.

I aim at the target, take a deep breath and shoot.

I finally hit a major artery!!

"I did it!!" I squeal.

"Yes, you did."

I turn around and jump into his arms. Then he let me down his hands still resting on my waist he quickly pulled his hands back.

"Sorry," he says.

"Its fine we better get going on the research," I say nervously.

"Uh yea." we go into the library looking through the books and looking it up on his laptop.

"Ugh, I give up! I'm bored, need a shower and I need new clothes!" I complain.

"Oh, yea I forgot about that! Let's take a quick break so we can get you some new clothes."

We get up and we get in the var sam hotwired and drove to a store.

He gave me a card and said to get nothing over 10$ and so I went around the store getting stuff and creating outfits in my head as I go. Soon everything was about 60$ I bought the close and we went to the bunker sam immediately went back to research and I took a shower and put on some fresh new clothes:

Then I went out to the library and continued reading the book I was reading before we left.
Sam was looking at me.
"What?"

"Seriously?"

"What?"

"The outfit really? You know I have a button up shirt just like that I've worn an outfit like that and you know that."

"Well, Mr.Winchester just because I am a fangirl doesn't mean I strive to be like you. Or any way shape or form dress like you this is just my taste of clothing so excuuuse you princess," I say in a sassy tone.

He laughs. "Ok."

Soon Dean and Mary come back.

"You guys find anything?" Dean asked.

I closed the book and sigh. "Nada."

"Maybe Cas knows something.Cas?!" dean calls.

And just like that. There stood the angel himself.

I wanted to squeal and fangirl but I managed to keep myself calm and collected.

"Yes, Dean?"

"Any talk in heaven about this girl?" he asked pointing at me.

"(Y/n)?"

"Oh my goodness he knows my name!!!" I squeal.

"Wait a minute how do you know her?" dean questioned

"A human in heaven she died many years ago" he knelt before me." do you not remember anything, my love? Those nights in Greece?"

I was so in shock I didn't believe what I was hearing." so my alternate me was dating you?!" I questioned in shock.

"You don't remember maybe this'll help." he kissed my lips passionately. Flashes of me and Castiel kissing, laughing....doing the dirty.I pulled away and pushed past him and ran away screaming.

I ran into my room and slam the door. He came in.

"You don't remember anymore?" he asked. He had a look of heartbreak in his eyes.

"Uh, Castiel I'm not who you think I am. I am. But I'm not. I think.  I'm from another earth. You are mistaking me for my alternate person."

"Oh."

"I'm (Y/n). Whats the person you mistook me for named?"

"(Y/n)."

"Oh well, Cas can you go up in heaven and see if any angel knows whats going on with me being taken here?"

"I can. But before I go can I try something?"

"Sure."

He kisses me and the flashing images come at me. I pull away immediately. "I'm not her Cas I'm sorry its true."

"It's ok," he says. Then he was gone.

I come out of my room but then go back inside and screamed into a pillow.

"I just got kissed by an angel!!"

Afterwards, I come and sit in the library and hide my blushing face in a book.
At least I know what my alternate self done. I wonder where she is.
"Well Me and mom are going to go out for a run. Need anything?" I hear dean asked.

"No I'm fine," Sam says. "Need anything (y/n)?"

I gave them thumbs down.

"Oook." dean and mary leave.

Sam took the book away from my face. "You ok?you've been silent."

"Cas is looking for answers in heaven," I answer.

"Ok, that has nothing to do with you though."

"Im...ok." I blush.

I kissed an angel....to be specific castiel!!!!!!

Fangirls would sooo die to be in my position!

"Um ok, that's good so well what do you want to do?"

"What?"

"We've been searching books for answers all day we've pretty much looked everywhere Cas is our only hope now. We don't have anything to do."

"I don't know maybe Netflix."

And chill.

I snickered at that stupid inside joke.

"Sure."

We go into his room I sit at his desk and we watch the flash and the walking dead. Sam would make remarks on one thing Rick did wrong or how fake it looked.

"That's the point its all fake and pretend,"I say.

"But still at least make it look real and be more realistic."

"Ok ok well at least tell me what you think about the flash!"

"I love it it's like a childhood dream come true from comics to the screen it's awesomer than I imagined it'd be!"

"I know right!"

Dean and mary come back so does Castiel.

We all end up in the library.

"So anything?" I asked Cas.

"Yes from my father." cas says.

"From God himself?!"

"Yes he's said." he looked at mary, "I think its best only you know." he grabs my hand and takes me to my room.

"Mary isn't going to be here for long and you're here to take her place beside the Winchesters once she leaves."

"Whaaat I'm going to be their mother?!"

"No you're here to help them hunt."

"They don't need me."

"They do believe it or not I'm simply relaying a message from God you will be of great help to them."

"So I just got teleported to this universe just to help?!"

"Yes."

"Wait what about my other earth."

"On that earth, your existence has been completely wiped from there."

"Oh my gosh!!!" I squeal.

"I wish you'd remember."

"Cas I told you-"

"I know but I don't want to believe it. You are so alike."

"Castiel maybe she's up there somewhere in her little slice of heaven you've just got to find her."

"Do you think ill be able to find her?"

"I believe so," I say smiling.

He hugged me. "Thank you."

We went out of the room.

"Well God says I'm here to help and I'm staying,"I say.

"For what purpose?" dean asked.

"Wel-" Cas cut me off.

"That is disclosed information god said only she needs to know."

"What he said... I guess."

"Well you know what that means!" dean says

"No, I don't."

"Tattoo." Dean pulls his shirt back to show me his anti-possession tattoo and taps it.

"Oooh nooooooo." I say.

"Oh yes." Dean says smiling.

"Mrs.Winchester back me up please do I really need to get need to get a tattoo?!"

"I'm afraid so darlin if it helps I can hold your hand."

"I guess that'll help."

"Awwe you're like the daughter I've always wanted," she says.

I blush sam and Dean looked at her in shock.

"What? I love my boys but I've always secretly wanted a daughter," she admits.

"Well let's go get this tattoo." dean says

We drive to a tattoo parlor.

"Where do you want it?"
The tattooist asked

"Umm here." I point to the area on my back near my shoulder.

"Alright lay on your stomach," he instructed.

I did so.i move all my hair to one side.(if you have short hair ignore that sentence.) I heard the machine whirring. I wince.
They sterilize the area they were putting the tattoo on.

Mary holds my hand I smile. I felt something sharp on my back.

I let out a small squeal and squeeze mary's hand a bit. It hurt a little after a while the pain was tolerable and somehow I managed to fall asleep.

Sam's pov:
(Y/n)'s grip became looser on mom's hand.

"Did she pass out again?" I asked concerned

"No she's just sleep."

"How is she sleep when she's getting a tattoo?" I question.

"This is actually pretty common. Some people fall asleep while I'm doing their tattoo maybe she has a high level of pain tolerance."

"Really?"

"Yea it happens all the time."

Soon he was done with her tattoo.

I wake her up. "Hey he's done," I say tapping her shoulder lightly.

Your pov:

I get up.

"Its over?" I asked.

"Its over." the tattooist says."now you are going to have to sterilize and change the pad on it every day for a month so it doesn't get infected."

"Ok."

He hands me everything I need.

Then we leave.

We go to the bunker. It was late and everyone went to bed. But I just couldn't sleep.

I can't help but to think about all of my friends and family on my universe.i know they don't remember me or even know I exist. But I know them. There are soo many memories.

I end up in the living room on the couch I turned on the tv but nothing good was on so I ended up 'watching' something. I ended up letting a few tears slip.

I hear somebody behind me it was Mary.

"Oh hey, Mrs.Winchester you scared me," I say smiling.

"Sorry darlin and please call me Mary. What are you doing up this late?and why are you crying"

"Oh just watching tv. It's a very touching show."

"An infomercial on an acne removal cream?"

"Guess I wasn't really paying attention," I say wiping my eyes.

"Want some hot chocolate?"

"That'd be nice."

She goes into the kitchen and comes back with two mugs with steam rising from them she hands me one and sits down.

"So what got you in here crying over acne removal infomercial?"

She jokes I laugh.

"It's stupid."

"I'm a mom I've seen Dean do some stupid things as a child try me."

I laugh." I know my friends and family don't miss me because I don't exist in that world anymore but I miss them and it hurts so much."

"Aww honey that's not stupid that normal you're homesick." she hugs me." or earth sick."

I laugh.

"It's all too natural to miss people you love honey that's what makes you human emotions."

I smile. "Thank you, Mary."

"No problem hun...Soo Sam huh?"

"What?" I say confused.

"I see the way you look at him honey you ain't foolin me."

"I don't know what is you're talkin about?"

"You have feelings for Sam just admit it."

"I would but its so weird to talk about it to your love interest's mother!" I giggle and blush. I cover my face with embarrassment.

"Its ok honey it's like I'm gonna give you a hard time they are grown they can chase after who they want. Plus I'm kinda ready for grandkids."

I blush." I don't know if sam even sees me the same way. I mean I'm just a weird girl from another earth who used to watch his life through a screen on my earth. How could he ever love me?"

"You're a nice sweet, smart, intelligent, funny, beautiful girl you're the whole package for him."

"Do you really think I stand a chance with him?"

"I know you do honey...(y/n)."

"Yes?"

"I hear whispers."

"What?"

"From up there. I hear angels whispering to me. I don't have long you and I both know that."

"Mary I-"

"Honey just promise me something."

"Anything."

"When I go back upstairs take care of them cause they haven't been doing a good job on their own."

"I promise I swear on my life."

"Thank you sweety." a tear falls down her face. I wipe it away and hug her.

Shes like the mother I never had...