Avengers x Past HP

Story: You used to be a student at Hogwarts, what I mean used to is that it became abandoned, after the war with Voldemort many students died to it, including your sisterLuna Lovegood so people left Hogwarts making it abandoned, a few months after you left Hogwarts to the Avengers universe and become a Avenger, that was 2yrs ago...they wanted to know what school you went too, you didn't want to but they forced you... About you: female, names Sasha Lovegood, 16yrs, 5'7ft, hourglass body, fair skin, short wavy dirty blonde hair, hairstyle is a butterfly cut with blonde butterfly bangs, blueish grey eyes, Hogwarts was abandoned 2yrs ago, was a ravenclaw, intelligent, caring, rude, accepting, sassy, stubborn, loyal, fierce, loves studying, BFFs with Hermione the Avengers act as they did in the movies