I have recently been through this with my elderly father, he too didnt want to pay for any care and insisted that he could manage alone, but it was clear that this was far from true. Like you, l had POA x2 for him, and tried my best to listen to his demands. It became apparent that he was mixing his tablets up and not washing and dressing during the day he was also living of snack foods and biscuits. His GP caught him in a right mess one day when she called to check his routine bloods and wafrin levels. She then refered him to the Memory clinic for assesment as she felt that this was not the behaviour of a full capacity adult in neglecting himself so much.
He was also allocated a social worker who, rather like your Mum, he hated with a pasion.
A Best intrests meeting was set up which l attended, along with his GP, Community matron, Social worker, and a community psychiatric nurse. The outcome was that l either found and employed the carers myself as POA, or Social services would take over and put it to brokerage services at our local council social services office, and a care company would be found to provide Dads daily care. It worked fairly well at first, lovely girls who really worked hard to care for him. He then started being rather abusive to them, not nasty in tye agressive sense of the word, but very inapropiate both physically and verbally, and thought this to be very amusing, which it was clearly not! He then had a couple of bad falls, and just before last Christmas, he ended up.in hospital after splitting his head and forearm open badly as he fell. A best intrest meeting was then called pre discharge, repoets obtained from the proffestionals involved, and a letter of withdrawal.of services had also been received from the Care agency brokerage due to Dads behaviour towards their carers. The outcome was that either l had to find him a care home place of my choice as POA, or Social services would act in his best intrest and place him.in a home wherever they had capacity, and l wouldnt have a say.
It was a horrible situation to be in. Dad feared the idea of any care home, kicked up badly and did everything he could to prevent even going to visit one. In the end, l had to sign a form to take away his liberty to return home, and he was discharged by Ambulance from the ward straight to a local care home which we knew well as a family, with an outstanding care quality commision rating, a lovely place.
It took a few weeks for Dad to settle, he can still be a real handful with the staff at times, hes still quite 'with-it' and can create havoc with the security systems in the home, having been an electrician by trade, but the best thing is that hes safe, not lonely, well looked after, and now more settled and happy.