Moral absolutes are all well and good but they don’t hold any water in the real world because they fail to take the entire picture into consideration. For example, the very most dangerous time for an abused woman is when she tries to leave her abuser. That is when he is most likely to kill her because he sees that she is trying to move out from under his control. And since half of all female murder victims are killed by current or former domestic partners, this is hardly a rare occurence.
For that reason, to say that a woman ought to (and is at fault somehow if she doesn’t) divorce her husband when he abuses her is absolutist nonesense. Being a human being is a messy and nuanced thing and being a human being who has been victimized, particularly by someone with a lot of power is particularly so. This is just armchair quarterbacking after the fact around topics you don’t really understand very well. An imagined world of moral absolutes might feel safe, but it’s also completely unrealistic.