It's really sad when families fall out like this just when they need to pull together . When my parents became elderly and needed help my two sisters, one older, one younger and myself ..set up a rota system with the younger one doing a bit more and getting her daughter in on the help, too because they lived just a few miles away. By the way. As soon as I started reading this I recalled you telling us about your caring problem and your two sisters. I'm sure,though and please correct me if I'm wrong, that back then one of them did show some willing. I also recall that I advised you get power of attorney although your mum was, at most times ok.. So..that was two years ago, was it. Wow.
Our neighbour is 67 and not good on her legs and her husband died last July of cancer. He lived 18 months longer than anticipated but was a skeleton when he died .I used to mow and strim their back lawn in his last months because he was too weak but he felt embarrassed when he had a son-in-law who could do it and who lived 5 minutes drive away so he paid him £50 a month for two mows and strimming. When he died his wife couldn't afford to pay £50 a month. "I rely on that" he said. He just left it. We tried to get someone in....a professional but they charged even more.The grass was getting long so I did it and will do it in future and as soon as it shows signs of needing a quick cut so it it will be easy. Even another neighbour has offered to do a few mows . I haven't seen her son-in-law visit since then....about a month ago. Beggars belief,really.