My friend and the guy she was dating for 4 years broke up. He was very abusive to her mentally and…

My friend and the guy she was dating for 4 years broke up. He was very abusive to her mentally and has threatened her several times. The other night when they broke up he called her some very awful things and said some horrible stuff to her. Then the next night he called her and told her that he was looking for girls to get with at college. I understand that it hurts an everything, but she isn't trying to keep her mind off of it at all. All she's doing is sitting at her moms thinking about him and crying. She called me a few minutes ago and she said if something doesn't change soon that she's gonna do something to herself. I honestly don't know what to do. I've tried talking to her, I've tried getting her to come hangout, and I've tried getting her to go to a counselor or something. I hate seeing her like this.