The Double Agent

On the orders of The Dark Lord, Talitha Gwen Brooke (the last name was changed due to her parents being Death Eaters) has been a Death Eater since birth. A girl born to be a spy for the Dark Lord. When she is eleven she (again on the Dark Lord's orders) was sent to Hogwarts. The Dark Lord did something different this time, though. Told her not to be in Slytherin, since it was likely that Potter boy would be Sorted to Gryffindor, like his parents. She was the Dark Lord's back up plan. Nothing more. But when a beautiful plot twist turns up in the book about her life, she is torn about which side to choose. Unless she becomes a Double Agent.