grannyactivist, I know you are right, of course. Perhaps we feel the need to find a reason for their behaviour, and the most obvious one is to point a finger at ourselves, and with that in mind, try to sort things for them.
Iam64, what you've said also rings very true, because those of us who do have adult children with these problems know how self-centered they can become. I don't know how many (or any) might take a step back and think to themselves, 'Oh, I must change my ways - look at what I'm doing to my mother'.
It's the not knowing, though - the wondering and the fear of if they're OK, have they got food, will they lose their job, flat, and because of all this, will they sink lower.....
We have to look after ourselves emotionally and physically, though when they're at such a low ebb, it seems as if we need to be there alongside them. Commonsense tells us we're no good to anyone if we go under too, though. We're mothers and commonsense does kick in sometimes.