Gosh
@SweetPepper , I'm glad the police checked up on your mum so quickly.
My mother fell in love with a tour rep she met while on holiday in 2014. At the time I didn't twig she was in the early stages of dementia. I thought the various problems that were occurring were her just getting older or the fact her eyesight was failing. When she came back from the holiday he was just a rep that had been kind to her. Over the years that changed until he became the love of her life and the family got fed up of the name Mario. She got really upset in 2018 when she thought my brother was inviting him to her 90th birthday. I had to explain it was a joke. Finally as the dementia advanced she more or less forgot about him. However the last time she mentioned him, when she was in a care home, was to wonder what would have happened if she'd stayed in Italy and had his babies. There was really no answer to that one!
I think sexual fantasies and older people is one of those areas that doesn't get talked about much and perhaps should. Mum started up a sexual relationship with a much younger resident while in her first care home, much the the man's wife's distress. Now she has very little language and rarely leaves her bed. Still her eyes light up when a man comes into view.
@Up the Creek , I hope you find a companion service. It might also be worth seeing if you can get carers in the help your mum wash etc. She might be more amenable to someone that isn't you.