@Tarabavah
Nothing is as deeply frustrating as having a friend who is under the spell of an abusive little shit.
However, your friend just won't see it that way, even if he was to split her scalp open and it need metal staples in it.. ''He didn't mean it, the cup flew from his hand''
These creeps also play the ''Long game''...if their victim gets away, the creep lures the victim back in, often using a shared animal, often a dog, as bait.
I intervened with two friends with violent partners, and in both cases, the victim went back with the men, even though one of the men hit me so hard that he broke his hand , and he burned me with a cigarette as he burned her.
He went to the hospital, with my friend, and she said that he'd been in a fight with a man, not that he'd punched a teenaged girl hard in the head.
These creeps seem to exert an almost magnetic pull to otherwise sensible women..
It is a job for the professionals, not mere 'Friends'
Oh and yes, these creeps hurt children.
I witnessed that, too.