A.A.
My concern is that he might have told her something that would cause her to fear. The act in itself will cause her to fear. It might have been an accident to tell you anything. I would report him to the police and press charges it is not to late. I would also have her see a child psych, this will help her to get through that block in her mind. Be patient and work with her. If something more went on than what she has told you it will come out. If so, when she feels uncomfortable or scared she might do this, she may have done this around him and it caused him not to touch her. She may just feel that scared anywhere. She has to cope with her fear and GET IT OUT!!!!