Dealing with Mom's attachment issues. Any advice?

Well my dad had responded to my mom when she told them I wasn't going to have a relationship with him because of his narc ways by saying "don't worry about it just let it (her) go." I guess when I set the boundaries at our lunch, she either told him or decided to be in control by now not calling at all. The last text she sent was a week ago. Knowing she has codependency and depression issues it will all be blamed on me no doubt. They have strangely enough, been going around my cousin they tell me not to speak with as well. I told her maybe she is the new daughter, she directly said no! Having used guilt to get what she wants for so long, I can see how this could be being used now since it makes my mind wonder what's up on that end. They are always trying to hide a plan to get someone for something. At any rate, she doesn't call to blame me for her choices in life now. I told her I would hang up if she did. I guess I was a whooping post for her after all. So crappy. I wondered in the past why they couldn't just be normal but I guess this is normal for them. I also worry if dad has told her if she leaves him he will have someone hurt her since he physically is unable to chase her down. I don't know. They are 72 and are what they are and not improving or showing motivation to be better people is all8 know.