Wife went through hell with her father, alzheimer's and sundowner disease. He would decide to go for a walk, but he couldn't find his way back, she would have to go and look for him, often for hours. She finally got him into a good secure facility, he no longer knew who she was, that was the most difficult thing for her to deal with. Physically he was still in excellent health except for diabetes, which he refused to acknowledge or accept. He broke his hip, was admitted to hospital and had a successful surgery, but he contracted pneumonia during his recovery and died.