Dear Sadie - taking care of an Alzheimer patient can make anyone silly!!
Yes, it sure sounds like Alzheimer or one of the other forms of dementia to me. I cared for my mother with AD for 5 years, and much of your letter describes the way she became. She is now in a good nursing home. In my opinion that is the best solution, but none of them are actually 'good."
Taking care of a dementia patient yourself is such a terrible drain on your nerves, patience, time, money and mental and physical health .. and the worst of it is, as they get worse, they don't even remember that you were there for them. My Mom has no recollection of the 5 years I moved in with her and took care of her. Yet at the time she resented me and once called me her 'jailer'
to my sister, when I was unhappy with her going out alone.
She has been in a NH for just over a year now and is losing weight .. no longer interested in food or much of anything else.
Yet she is incredibly old, 98, so I feel I am lucky we had a normal Mom for about 91 years ...
Good luck with all your decisions.
God bless all caregivers.