Woman trys to unadopt child

I heard about this story yesterday. A woman in Virginia is trying to unadopt a child now that she knows his psychological history. She was his foster mother, then he sexually abused a couple kids and was declared a sexual predator. Because of this designation she couldn't keep another foster child in the house and her grand daughter could not longer visit her when this boy was in the house. So, rather than giving up the boy and letting the state do what they needed to do, she decided to adopt the boy so that she could have him at the house and keep her foster daughter and her grand daughter could come over. Then the boy went and sexually abused another kid and she found out about the boys horrible past. She says that she didn't know how psychologically messed up the kid was when she adopted him and so she should be able to unadopt him.

My big problem with this whole story is that before she adopted the boy, he had already done some seriously bad stuff. She knew what he had done - she knew that he was dangerous around other kids. Yet in spite of all this she adopts the kid anyway. I understand she loved him and wanted the best for him, but a clear thinking adult should be able to see that this kid needs some professional help. She got herself into this and I don't think she should be able to cry foul and get out of it scott free.