Your daughter lives with aggression, and fear, and bullying so she will only react to the least pressure from you with all the anger she can't let out to the boyfriend. Such a terribly difficult thing to do, but if you can simply let her know that she is loved and you are a safe, unpressured, place she can come to, she may just need to know that.
I hope for better times for you all.
Mother of the Groom outfit woes