The Forgotten Twin (Harry Potter/ Twilight Crossover)

I'm Quinn Swan, but I live in London and attend Hogwarts School of Witchcraft and Wizardry. I'm a 6th year Slytherin, and I come from a pure blood family. I have a twin named Bella, but she's a squib and doesn't know what I am. I don't have many friends, but I often talk with Malfoy and sometimes even Cedric. I've had...