Hi SueEllen,
I understand where you are coming from! Our daughter is 35 years old and although she has not been formally diagnosed with BPD (everyone else has a problem, not her), my therapist has a high suspicion that is what we are probably working with along with narcissistic tendencies.
You are not alone. There are many people out there that are working through situations. You're right - it is heart-breaking and sad, but please know you need to take care of you. That's one thing I've learned from this site - we are important too.
A book that my counselor suggested "Stop Walking on Eggshells" helped me a lot. It was an easier read than most books I have read as it was more of someone talking to you instead of all the scientific explanations.
There are many places on this site to receive information. Please read/watch all of them - they are very helpful.
Sending you hugs and prayers!
Ione