Many long years ago, I worked with a man who regularly beat his wife to the point that she sickened and died. No charges were ever filed because the local DA said that he couldn't prove the beatings caused the death.
Fast forward two years: He met a girl where we worked and wound up marrying her. Soon as they got back from the honeymoon, he started in on, "If you do this, I'm going to beat the crap out of you" etc.,etc.
She stopped him in mid-tirade by asking him to wait just a minute. She went into their bedroom and came back with a .38 revolver which she stuck up his left nostril. She then told him, very sweetly, "You beat one wife to death, you S.O.B, but if you ever raise a hand to me, I'll scatter your brains all over the ceiling!"
Last I heard, some thirty years ago, they still had a happy marriage because he can't find where she hid the gun.
Any male (he ain't a man) who would hit a woman, much less beat her, deserves whatever she is able to dish out. I just wish more women would do this to abusive males.