Hi helpformum
Welcome to the bpdfamily. I'm glad you found us and are able to share your story, it is a great starting point just to be able to talk to others who understand and care about what you are going through
You're so right; it's a difficult realisation when you're adult child is behaving in a way that is still so child like and we can see the destructive and exhausting consequences of their behaviour. We fear for them and for ourselves and wonder if it will ever be different. As parents, it is very hard to be hurt by those we love.
Great that you are seeing a therapist, in particular as it is impacting your relationship with your husband. Do you have other available support?
This site has a wealth of resources to assist in understanding BPD; a great place to start. I have started reading Shari Manning's book - Learning to love someone with Borderline Personality Disorder and it has been very grounding. Take care of yourself and I look forward to sharing your journey here.
Merlot