Not read the whole thread, but I know of at least 1 woman whose confidence/self esteem was so low, and she didn't trust her own judgement, to the point where she didn't totally trust what she had seen with her own eyes.
The man would slap/hit her DC, push them around, and tell her that the DC needed discipline, that the DC knew what they had done was wrong, and the mother just didn't believe the DC when they said they hadn't done wrong. Of course children tell lies to evade punishment don't they??
I don't think the mother believed she was a good mother, and looked to her H, who was the stronger person in the relationship at the time, for the answers.
A lot of the violence towards the DC happened when the mother was not present, out at work.
If you are frightened to be without someone, if you are frightened to be alone, if you are frightened of your relationship ending, it is surprising to many how much a frightened person can and does justify to themselves.
Some of the justifications I have heard are:
If only the DC learnt how to behave/not piss him off, he wouldn't have to punish them like that.
It's H's upbringing, he had a rough time, he was picked on at school.
He is only trying to bring the DC up to be decent people.
He is good in other ways.
He buys them everything they want and they are so ungrateful.
The DC annoy me sometimes, but everyone deals with their anger in different ways.
I was disciplined physically as a child and it never did me any harm.
It seemed to be a combination of four things...DV being the biggest problem, but the reason she didn't leave is mainly because the mother was frightened of being on her own, she had a sexist attitude (against women) and she blamed violence on the victim, so lots of justifications going on. Not sure if part of this was a generational thing. As time goes on, we are realising more and more how victims were (and still are) blamed for the crimes perpetrated against them. I hope, as a society, we continue to move in the right direction wrt this attitude and continue to move towards blaming the perpetrator of the crime rather than the victim.