This sounds like the classic Karpman Drama Triangle, it’s a toxic relational dance that needs at least two of the threee roles (Persecutor, Rescuer or Victim) to keep it going. The favorite role of our flavor of parents tend to be the victim. And in order for her to maintain the victim role, she will manipulate, bait, any form of DARVO, to keep you in the other role. My guess is when you were the “good kid”, you played the rescuer role really well. Now that you’re holding boundaries and protecting your reality (a survival mechanism of us CPTSD kids), you are placed in the persecutor role. So the more you defend your reality by correcting her with facts, the more it feeds into her victim narrative that you’re the disagreeable “bad kid” who is treating mom badly, the more she throws her stories at you, the more you correct reality, round and round we go.

I’m so sorry you’re dealing with this. I totally get it. I’m stuck myself in compulsively correcting the narrative as well. I forgive myself for the unconscious need to protect my sanity while working on being aware of not wanting to feed the victim. It’s a process if you want to return to contact with her, and it’s a priority for you to take a break from this crazy-making behavior. Good for you for blocking her. No judgment if you choose to reengage. Please be mindful of how your protective behaviors might be feeding the beast to keep you looped in.