Hogwarts sight

Intro to your a girl and named Sam your 18 you were taken out of Hogwarts to be expiremented on but now your let free u have a 6 year old sister who is the same as u and your story your both are a gryfinndoor and Slytherin ik I couldent decide your friend with golden trio and slythering gang but your ister just stays near you but doesn't talk to anyone story so your not allowed in Hogwarts because the powers u know have but they were learning abt powers for a change and decided to let u and your sister come to Hogwarts as long as your had a limited to movement so you have in the clas in front as the teacher explained about the powers suddenly they got a bit so close like one extremely but just eno7gh to piss your fuck off