My Mum passed earlier this year aged 92 but she spent the last 5 years in two different homes. Hairdressers and manicurists visited regularly so the residents had that sort of care.
Another thing which people may not know, is that old people frequently get water infections, and confusion is...
There may also be an element of depression as well, as you say, she's had a lot of health problems and pain.
I would recommend your Dad look locally for a mobile hairdresser who would come to your home. Many women feel better after having their hair done, and a sign of depression is not...