I respectfully disagree. He has apologized and validated her feelings many times. She and only she can choose to take responsibilty for her part in this dysfunction. The only way C can do that is to stop letting her blame him by cutting her off when she goes down that path. It's immature and hurtful and she needs to stop doing it.
Once she realizes it's not all C's fault then maybe she can realize how IRRATIONAL and IMMATURE she has and continue's to be.
