Be a safe place for the family to seek support. Try not to be judgmental. Always remember that there once was something in the mother for the husband to love and there always will be love for the mother in the children regardless of all the other emotions and challenges they face. Sometimes that is the most difficult thing to reconcile for adults who were abused children. Don't feed the hate. It does not help. And, yes, definitely encourage family therapy. Serious abuse is not something ppl fully recover from on their own. It's impossible to have the objective perspective necessary to do so.