It's good that you are listening to the advice of others and you should consider getting some professional therapy to help you both deal with this and to understand what has gone on now and in the past.
Having been in an abusive situation, it is much better that your daughter is living with 12 other people. An abuser, particularly one that is possessive behaves much worse if in an isolated situation. If this boyfriend is dangerous, he has others to answer to and that includes his own mother, which in all likelihood, would mean that he tries not to do anything to make her think badly of him.