I'm also a widow and I'm an only child with no children. I do have cousins, but they've made it clear that they don't want the hassle of being my executors. I understand, but that was a bit of a blow. They're happy for a solicitor to be the executor, so I don't think there will be a lot left over for my cousin's kids to inherit.
Apparently, a couple of their kids would be my POA, but they live at the other end of the UK. I'm intending to use my savings to organise house repairs and make my life easier. I'm not certain about what to do with my house - I guess it might be sold to pay for my care at some point.
I'm not making the two volunteers my POA - I don't see them taking the time to pick out the best care home for me...
I do have a nephew through marriage who has been quite kind to me, but I knew my place the first New Year that I was without my husband - I got a message from his wife very late on, telling me that I could see in the New Year with them, but that I'd need to find a hotel (at late notice) since they were having her aunt to stay over. They're at the other side of Scotland, so I declined.
I'm sorry @MarilynAE . I realise how disappointed you are that your friend is not meeting your expectations.
All I can suggest is that you look for recommendations of companies that can help you in your own home - that's what I'm doing.