I don't know that you can do anything until he scares them again :-( and proves his classes and the year didn't help. As Always says, maybe you can prove to a judge or protective services that it will re-traumatize the children. When you left/got out with the girls, where did you go? Maybe someone there can help by testifying how traumatized the girls were and with their opinion that the girls would be retraumatized. Get more than just you (who are presumed biased) on you all's side, a therapist or another lawyer, etc. It might be a good idea to get a therapist for the girls while they try the revisits so they won't be as traumatized or feel so alone.