Usually in these cases the mother is pretty beaten down and can’t conceive of doing something against the wishes of the husband/other. And what sort of threats has the brother been subject to? For such families not much exists outside of the immediate family situation.Going to the police is just not a perceived option. Their world is very tightly limited and everything outside it is just sort of a blur. In school the kids are probably detached-cocooned.
Spare me son unless you have first hand knowledge of similar cases.
I do.