Mixed with Magic (Harry Potter's Twin Sister {AU} fan-fiction)

Imagine a world were Lily and James Potter weren't just Harry's parents.....Imagine a world where not only harry was born but his twin sister Skylar Lillian Grace Potter was born too.In this Alternate world Lily wasn't a muggleborn in fact she was a halfblood of a different kind. Lily was half witch half vampire.In this world Harry and Skylar's parents weren't Gryfindor neither was Padfoot, Moony,or Dumbledore. In fact they were the opposite.They were all Slythern.In this world Lily and James Potter didn't die.No, they were kidnapped.By the one true evil.Voldemort's wife......Nervada The Potter twins,being nothing more than baby's were sent to their aunt and uncle's home for the time being,or so was planned.But no, after not even 3 years The Dursley's wanted nothing to do with the potters so instead of taking in their 'dear' niece and nephew they did the exact opposite.Trying so very hard to get as far away from the 'remaining' potters,The Dursley's gave the twins a one-way ticket to an orphanage in THE U.S!! Their only excuse?? "We didn't want little dudleykins getting any bad examples from those vicious Potter twins!!" (In this world all deatheaters are gryfindors and the whole Weasley family minus Fred and Goerge,are hufflepuffs.Snape is still head of slytherin or more like King of slytherin.And Minerva.... Well she's a finder now too......) ALL RIGHTS RESERVED!!! AND I DONT OWN ANY OF THE CHARACTER EXCEPT FOR THE RANDOM TOTALLY AWESOME CHARACTERS LIKE LEAH!!!EVERYTHING ELSE IS J.K ROWLING'S!!! Except the plot mix up thats totally mine!!!