Dedicated to: @adelinedownes for giving amazing advice and helping me on my journey to become a better writer.

Christmas was going amazing, but the was still no sign of Harry, Ron, and Hermione. I looked everywhere and just as I was about to give up, I ran into them. "I WAS LOOKING FOR YOU!" I cried out. Just then, I noticed they were wearing oversized Slytherin robes. "What... are you wearing?" I asked, they looked at each other and tried to run off but I grabbed them by their collar. "Tell me now, or I can easily snitch on you." As they explained everything to me, I asked "Where's Hermione?" They shrugged and walked off, but I followed them into the girl's bathroom.

"Hermione, we have loads to tell you," Ron said.

But Hermione responded, "Go away."

I heard Moaning Myrtle giggling, "Oohhh, it's bad." She said and floated off. The stall slowly opened and I gasped.

"What's she doing here?" As Harry and Ron explained the robe incident, I was looking at Hermione, who was covered with fur.

As we left I hid Hermione under my and her's cloak and brought her to the infirmary where I left the boys with her. I went back to Ginny and we played numerous games, I beat her 3 times in wizard chess and we gambled with a pack of cards. I heard a door open and Professor McGonagall walked in holding a sheet of paper. "Here is your new schedule, Miss Potter." as she walked away,

I said, "Wait" She turned around. "How come Harry and Ron don't know yet, even though the entire school knows?" I asked.

"Professor Dumbledore said that the students cannot tell Harry." I nodded and she went on her way. Just then, Harry and Ron came back. I waved to them and they walked up the stairs.

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Months passed, and another attack happened, a double attack. With both a 2-year student, Justin, and the Gryffindor Ghost, Nick. It sent the school into a frenzy and everyone was panicking. Ginny was incredibly pale and when I asked she acted like I never asked her. Malfoy looked like the complete opposite. He was smiling as if it was his birthday every day.

One night, I was at the top of the stairs in the Gryffindor Tower and I heard Harry and Hermione talking. "I think, I'm related to Eliana." He said.

Hermione shrugged. "Why do you think that?" She asked.

"I just, always hear whispers about 2 Potters, and I wasn't there for the sorting ceremony. She also looks familiar. And last year, when I looked at the mirror of Erised, and I saw my family, I saw her." I slowly crept down the stairs and sat at the bottom. "I think she's my cousin." I walked up to him but he still didn't notice.

"Close, but I'm not your cousin." He jumped up startled. "Were you there the whole time?" I nodded.

"What do you mean, 'close, but I'm not your cousin?" He asked.

"I'm your little sister. I was born a month before Mum and dad died. When you were given to Aunt Petunia, Professor Snape brought me up. He raised me for 7 years, then gave me to a muggle family. Then I came here. You saw me in the mirror because I'm family. My full name is Eliana Lily Potter. I found out only a couple of months ago when I first met you." I lifted my hair to show my scar. "Look. I have the same scar as you, I may not be the chosen one, but I still lived." Harry fell off his chair in shock.

"So, you're my... Sister?!" I nodded vigorously.

"Yes." He stood up and plopped back into his chair.

"So, you knew all this time, and didn't tell me?"

"I wasn't able to," I explained everything and his eyes were wide with shock.

"I'm just going to rest now..." Harry said and walked up the stairs.