Hi Peter,
It sounds like life isn't getting any easier for you.
What is the situation now regards your Mum, is she still in hospital?
What about your wife? Is she letting the care workers do more for her?
Have you spoken to your counsellor about how you are feeling?
Sorry for all the questions. I have felt at the end of my tether, more than a couple of times, usually when I'm battling on behalf of S or more sleep deprived than usual or feeling trapped or under pressure with too much to sort out. I have an innate desire to feel in control. When I feel like this I know I need some self care (and preferably before I get to feel like this). You said before that you are sometimes able to escape for a few hours and have some time away. Are you still able to do this? It sounds to me like you need more time to yourself.
Melly1