For long month's you've part of the Dumbledore's army, as Harry's girlfriend. But you were secretly a death eater who was only dating Harry to find his secrets. You didn't know that everyone had found out what you were, but they kept pretending like they don't know so Harry can use you to get information about Voldemort

Molly and Arthur Weasley, Ron, Ginny, Hermione, Harry, Fred and George, Sirius black, Remus Lupin and Tonks are by the house, pretending like they don't know about you.