Absolutely, her mum will need help showering, going to the toilet, everything really, and I think Joanne is under the illusion that when her mum gets out of hospital everything is going to go "back to normal", she's in for a big shock.I don't think it is ok in that house. If she's gaslighting followers, has done the same in work you can bet your last cent shes doing the same at home. Coercive control is very real and we know she uses emotive statements to get what she wants.
Her poor parents, I really mean that, her mother will need a lot of support during her recovery and I doubt she will get it. Sometimes people aren't aware that its happening.
Joanne is not going to like giving up her time, even to help her own mother, she talks about her "me time" so often and like it's something so sacred, she will not be pleased to have the focus taken off herself.