Hermione's Sister

Set during Hermione's sixth year at Hogwarts.
Hermione has a sister named Kylie she's never told anyone about. But this year Kylie is being transferred to Hogwarts and Hermione is now faced with having to tell everyone about her. On top of it all Hermione and her sister hate each other and Kylie is the exact opposite of Hermione. And to add to the mix Draco (Hermione's arch enemy) might be falling for Kylie. And Kylie isn't exactly what she seems