Why did your mom get drunk?
Was her boyfriend drunk, also??
There's never any reason to hit someone (unless she was hitting him first, maybe?) but if your mom is the one who was drunk, then maybe her boyfriend's "moods" aren't really a result of him being an asshole.? You didn't give enough details.
Does your mom get drunk a lot?? Do they both drink?? Again, even if the source of all the arguing is your mom (and I know it might be hard to see that, from your point of view) there's still no reason to be violent with her, unless she starts it.? For example, if she is hitting him or throwing things at him, and he is trying to subdue her, then that's acceptable.? But if that's the case, then they just need to break up.
I'm just saying, is there something about this story you're not telling us?? Is your mom an alcoholic and needs help??
The reason I'm asking all this is it seems like this is the case a lot of times.? Someone will complain "Oh, my boyfriend beats me" or whatever, when in reality, the woman is an alcoholic or drug addict and she's always trying to start shit with the man.?
no she isnt an alcoholic or drug addict. she rarely drinks in excess, she was at her friends house, and she hadnt been otu for a loong time, also she isnt a violent perosn at all, she wasnt getting agressive or violent.