Welcome Diane:
I'm sorry about your friend. It has to be stressful to be your friends caretaker 24/7. You should find the support here helpful
I feel like I've lost my best friend to this disorder, and I've lost myself a long time ago when I gave up trying to argue with her. I always put myself aside and lately I've realized how lonely I've become.
How do you feel you lost yourself when you quit arguing?
What are the most distressing behavioral issues your friend exhibits?