Domestic Abuse

I have a friend who is in a very interesting relationship. Her boyfriend is emotionally and verbally abusive. He has not resorted to violence yet, but does have a strong quick temper. When he does get angry, you can see the violence ge could bring to the others in the situation. She knows she needs to get out of the relationship and it has just become a comfort, but she still goes back to him everytime he apologizes. I dont want to see her get hurt, in any way, but its hard to watch her go back. I am really not looking forward to the phone call of come pick me up, he just hit me. She is unfortunitly not the type to just up and leave because she loves him. I have a hard time understanding why she would want to stay in a relationship that is abusive and not emotionally connected any more. I know at any point, no matter how much I love the other person, as soon as abuse starts happening, Im done with the relationship. I wish more girls would understand they dont need a guy and especially a guy who is abusive. Every girl deserves the best!