Hi again, there is always hope. Personally I think you need, a specialised trauma therapist, they will know what they are dealing with once you tell them your story, then ye can start working on recovery. I know you have a wonderful family and you really want to enjoy and embrace in your golden years - just not like this.
I believe trauma therapy is the answer. Not medication. Sorry to hear about the auto immune disease, I know you are going through a lot but do not be too hard on yourself.
Stick with the therapy you are currently doing, if that makes zilch of a difference, trauma therapy is the route to go down for sure.
We're all here rooting for you