Abusive relationships

A really good friend of mine is in a abusive relationship. He always hits her in the face when he has been drinking and she always runs right back to him.. Well last week on the 4th he got shitty drunk and came to our job and was swearing at her in front of all her customers and saying how he was gonna kill her slowely then kill himself. Well I didn't feel safe with her going home so she came to my apartment. It's me and my boyfriend and out two dogs well her boyfriend came to our apartment and was banging on the door saying how he was gonna kill everyone in the apartment and blah blah well I called the cops and he left. Well the next day we went to where they were living so we could get her stuff, he was there so we tried avoiding him but it didn't work out so he was drunk still (he didn't stop drinking) we went into their apartment and got some of her stuff and he came up to the apartment was throwing stuff and pushing her well the maintenance man heard everything and came over and asked what was going on well that pissed her boyfriend off so he attacked me and went after my friend.  The maintenance man told me to go call the cops and I did while I was calling the cops her boyfriend attacked her and head butted her in the face and busted her lip, well the cops got called and came and she wouldn't press charges. We got all her stuff and left and I got a restraining order for 72 hours. Me and my boyfriend let her move in for a week and her boyfriend was sending her messages that he was gonna shoot us in the face and head and kill us and I told her I wanted to get a full order of protection so he couldn't come to my apsrtment. She wouldn't let me get one and wouldn't help
Me with the edvience I needed to get one so me and my boyfriend explained to her that she couldn't live with us if we couldn't get one because my boyfriend can't expose his son to this. Now me and her are fighting really bad and she is telling me I'm selfish. I'm just curious as to how yall feel about the situation.. Was I in the wrong of telling her that she couldn't stay with us? I let her move in and use my car and she only gave me 50 bucks rent and gas and everything  . I just couldn't expose my boyfriends son to this stuff going on. Sorry it's so long.