Exactly the same thing happened to my Mum, she had dementia and was virtually deaf because she wouldn't wear hearing aids.
She never recovered after the pelvis fracture because she refused to give up her walking frame and became totally dependant on it. Please make sure, when the time comes, that she doesn't lose all use of her legs because she hangs onto her walking frame like a lifeline.
You have been amazing and must be exhausted, so do take advantage of all and any help offered, and look after yourself.
XXX and hugs