Hang in there, okay? The reason that we don't discuss the evil deeds of the children's parents (in divorce, as well) is that the children often feel responsible for the choices of their parent(s). It's because they haven't developed the necessary Life's Experiences to process what is happening, and too often people throw the children into the fray without meaning to. Certainly, others do it with clear intention.
LoveFraud.com will help to thoroughly explain sociopathy and the ramifications of sociopathic choices.
Best wishes to you, my dear. And, work on getting legal custody as soon as you possibly can!