Aimee
You have to let her realise what the oser boyfriend is like, women in abusive relationships will not leave until they feel emmotionally strong enough to do so, that time will come, sending her to a program will make her long to be with him even more, all you can do as a parent is pick up the pieces every time and help her get away from him when she's ready to make that decision, either that or send the heavies in on him
She's the victim here, don't make her a victim twice over by isolating her from the people she needs around her the most at the moment