Hi BB,
I know the strain of being pulled in two directions and it's never easy. I am pleased you haven't put yourself under the added pressure of having to be there, as you have the comfort of knowing she will slip away when she's ready. I always felt wrong being at home, and was unable to enjoy the children with mum on my mind every minute, and living on my nerves when the phone rang. Yet when I was with mum, alone with her in her world, I felt I was of better use at home...
Time will take care of it one way or another, so trust your judgements at each given moment, then you'll have no regrets.
Sending love at a very difficult and unique time, xxx