Amy Chelsea Stacie Dee by Mary G. Thompson

Cousins Amy and Dee were kidnapped by a stranger as children. Now, sixteen-year-old Amy is back with her parents. Dressed in purple and clutching a plastic doll, she refuses to answer questions. As Amy struggles towards a normal teenage life, her family – and the police – press her for information. Unable to escape her past, Amy realizes she has to confront the truth. How did she survive? How did she escape? And what happened to Dee?