When one parent behaves in a hurtful way, the other parent naturally seeks to retaliate. Then the first parent responds with additional abuse and the other
parent feels the need to respond in kind. This creates a negative feedback loop that can go on for years in a malignant and self sustaining way that brings nothing but misery for everybody in the family.
It only takes one parent deciding to stop reacting to negative behavior, to break the negative feedback loop. You may not realize just how provocative you are. You may not get it that you trigger her in ways that are unfathomable to you. And you may be relieved when she simply doesn’t judge you so harshly anymore. You may even do something nice in return.
Understand that life is unfair. That’s it. Let go of resentments that really don’t count for much in the long run. You see, there is more than just a negative feedback loop. There is a positive one as well.
Treat a normal person with respect; you may get the same in return.