If your daughter does not realize this guy is "dangerous" there may not be a whole lot you can do. She needs to get a restraining order on the guy to begin with, and then go from there.

If you object to him, she will only defend him and then have to believe he is worth defending so be careful! Let her know that you fear for her safety and will always be available when she needs you. Ask her if she ever heard her Dad call you names or treat you that way, ask if she has ever been treated like that in a relationship before. Ask if she hesitates to leave because of the children - does she feel she protects them? This might be a lot more complicated for her than you might see right now. Proceed with caution and stress your love for her and the respect you hoped you taught her to have for herself.

I have a friend that lost her 28 year old daughter 4 years ago to a guy she was dating. They would fight, make up fight, etc., etc... He is now serving a life sentence for one of those fights... one that got out of hand and ended up with her daughter being strangled to death...
My friend said all the signs were there but there was nothing she could do.. if he hurts her and you can get the police involved, restraining order, etc.. it will probably take something drastic happening before she gets wise...
Do WHATEVER you have to ... protect your daughter.

apparently he is conning her,he has to be convincing her that he doesnt mean to do it and be sorry (not really pretend that he is sorry though,)or why would she take it?until she can see through the con, and realize that it is true that love is not supposed to hurt ,she will not get away from him.they thrive on mind control.and she is absolutely brainwashed with all of his bull right now.maybe you can not get mad and demand things like leave him,or force her to file charges or get a restraining order. but maybe you can encourage her that if he cares about what he is doing that he will get counceling,if not couples counceling.maybe the councelor can get through to her.it is a way to get her some help without her knowing it.because that is the most important thing right now is to get her help..and let her know that you support her, they also thrive on tearing her away from all that loves her.i dont know if he is trying or doing that, but dont let that happen or she will not come to you when something happens ,keep the lines of communication and support open for her.i hope something ive said will help...
good luck
joyce

your daughter really needs to know you love her and that you support her...DO NOT go off about that piece of crap that she is with, because, she will just want to be with him more. I think you should let her know how special she is, and, try to get her into counseling. As far as him having children...OMG!!!...that really really bothers me as well. He SHOULD NOT have custody of those kids...no way! Something needs to be done NOW to stop this madman!

Believe me, your daughter knows he is dangerous, she is not stupid, she is scared out of her mind, and, doesnt have the strength or the self esteem to leave his ass! I am so very sorry that she is putting up with his crap. She is worth soo much more...just keep letting her know..with hugs, support and words of kindness.