
I'm so sorry that you are having to deal with irrational anger and other BPDish stuff you mentioned.
Seems especially unkind that a deceased person, or perhaps a mis-remembrance of deceased person, seems to be playing a dysfunctional role.
I want to assure you that you've found a group of people that "get it". We get the crazy reasoning and the misplacement of blame.
https://www.bpdfamily.com/content/what-does-it-take-be-relationshipCan you read this article and let me know your first impression?
I'll check back later today and see what you have to say.
Best,
FF