On a practical level, if you can afford it, I would book a private physio appointment, so you can be shown some exercises that will help while you wait for the NHS.
I would also, if you felt able, have a conversation with your daughter and son-in-law together, along the lines of ‘I realise we should have discussed expectations, my contribution to costs etc, before, but better late than never. This is what I suggest (and be clear what you are asking and offering, eg a set sum per week to cover your/dog food, a contribution towards an extra utilities, a couple of quid for petrol if you are regularly getting lifts; how much time you will spend with them/in your room; what jobs around the place you can realistically do; and so on), is that acceptable? If not, what do you suggest?’
I’d also be talking to your GP about getting some care support, which would make your life easier and free up some of your daughter’s time, presumably.
And on an emotional level, if any child of mine shouted at me, they’d get the sharp edge of my tongue. Honestly, just tell her, as you would any other rude boor, that it’s unacceptable, that you have no intention of engaging with her when she shouts or speaks rudely to you, but you’ll listen when she treats you with some common courtesy. And mean it.
New house and a sloping garden
How do you acknowledge Easter.