Okay so my book "The story of the pony and the troll" Is based on a theory that's been ticking at the back of my mind...it was about Poppy and Pinkie Pie actually being siblings

now hang on i know what you all are gonna say "But they're from different franchises it could be just a coincidence" well i have something that could blow this whole theory away!

So in the fanmade Pinkie Pie mlp song called "The Gypsy Bard" There was a lyric in that song, the lyric said "When I was a little filly, a galloping blaze overtook my city So they shipped me off to the orphanage"

So here's what got me thinking What if after pinkie pie and poppy's mom was killed, peppy was forced to put pinkie up for adoption where pinkie would later be adopted by Igneous Rock and Cloudy Quartz and become the third oldest sister of marble pie? also if you take a look at pinkie pie's color scheme before the sonic rainboom she was pink with a hot pink flat mane and doesn't even resemble cloudy quartz, igneous rock, limestone pie, maud pie and marble pie and strongly resembles poppy more!

and in the season 8 episode yakity-sax when pinkie becomes depressed because she can't play the yovidaphone it's not when she became depressed and crazy like in season 1's episode "Party of One" instead her coat and mane began to get grayer and grayer and pinkie became more and more depressed just like what happens to trolls when they lose hope

SO to close this up Pinkie Pie is poppy's older pony sister by 3 years and pinkie was put up for adoption after their mom was killed THERE BOOM! CASE CLOSED!