If you are a "CARETAKER" for an Alzheimer patient you should realize a couple of things, no matter how heart breaking they are.
1. Its over for the Alzheimer's patient, they are doomed.
2. There is no one in the medical profession on this planet that can help them.
3.Get help from an elder services lawyer who deals with Alzheimer's patients and their Caretakers, and understands your particular States laws governing this problem, and the Nursing Home involvement.
Alzheimer's victims will drift into another world so don't waste anytime trying to correct their delusions, hallucinations wanderings etc.
Its tough I know, but don't hold out any hope for a back to normal solution , it is not going to be there.
Do the best you can, and get along with your life, and make yourself and people around you happy. -Tom
Sobering.