She wanted it to be my fault and disremembered so much to try and twist history to fit her story.
I think the reason fo that is they're trying to reconcile the sh-tty things they are doing/the messes they are creating and they can't accept any blame for it so they lash out. It's really sad and pitiful.
But alas, you sound SO much better without her, even if it wasn't what you signed up for. That amount of toxicity = no good.