Hi there

I'm glad you found a new light at the end of the tunnel. I certainly know the mixture of feelings hope and knowing it would be a long road. 32 years without making sense of the person you love is a long time, no wonder you cried when some things started to make sense, and when you discovered you are not alone in this. About 100 million people have BPD worldwide, imagine how many family members, friends, spouses... .are afected by this, and we have lived as if no one could understand what we go through.
When you think about those numbers, you get mad about the health system not meking a bigger effort to take it seriously, but that's another story.
I hope you can take some relief by writing your experiences. I'm glad you have a daugter that could shed some wisdom in the matter. She must be a great support to you, you can team up on this.
We "nons" often also think in terms: "we do harm... .Well, they deserve it, because they did us harm". The thing is, in the long run, not long after, that harm hurts us back, and it makes our life and our relationships worse and more painful for everybody. So, the question to your husband is, "yeah, they migh deserve it, and it sure feels good in the moment to vent, but, is it making your life better in any way?" The think is, it takes a long way to realize that just stopping some behaviors that feel logic and justified in the moment, we can make things a lot better for ourselves. It works for us as partners, and it works for them also, but they are holding very hard to the thought that they need immediate relief for the rage/pain/frustration they are feeling, and if they do something differently they are failing themselves, or being "fake". I don't know if I'm making a lot of sense.
Wish you the best, and I hope we see you sharing good news, and anything you need to share.