The Slytherin Transfer

Cassidy Milton was sorted into Slytherin at her first year of Hogwarts, exactly like the rest of her pureblood family. Although she doesn't feel like she fits in with the up and coming Death Eaters, once the Sorting Hat makes a decision, there's no going back. Right?

Wrong. Going into her fifth year at Hogwarts, history goes down, and she's transferred to Gryffindor. Now she has to deal with Slytherins calling her a traitor and Gryffindors not trusting her, not to mention a certain troublemaker that she promised never to get involved with.