Oh Mick, I'm so very sorry to hear about your Mum. She sound like a fighter and I know from experience that the people who master having a stroke are the fighters.
But you also have to look after yourself, remember to eat and breathe. Stress has a very debilitating effect on the body, take some time out for a massage or something like that. Get your mum an aromatherapy massage - it can only do good.
Sometimes trying to sing when you are upset doesn't work right. I know when my dad was ill I tried to sing the songs we sang together and for a while It was like trying to sing while being strangled. I couldn't get the sound out, but out I'm sure your music will come back and who knows may be the better for it. There are some people who sing and there are others who make you feel like they know whats going on in your head - makes me think of "killing me softly"
I'm sorry I'm rambling, all I really wany you to know is that there are many who are wishing you and yours well and sending you much, much love.
And not forgetting your Dad, I am hoping he has a good recovery.
Remember that in amongst all this horrible stuff thats going on that
"you are a child of the universe no less than the trees and the stars: you have a right to be here. And whether or not it is clear to you, no doubt the universe is unfolding as it should. therefore be at peace with God - whatever you concieve him to be. And whatever your labours and aspirations, in the noisy confusion of life, keep peace in your soul. With all its sham, drudgery and broken dreams, it is still a beautiful world. Be cheerful. Strive to be happy."
I have this pinned on my fridge - i should stop and read it more often.
Thinking of you Mick