My uncle died in August 2017 of a massive heart attack. My Aunt, his wife, who is 87 yrs old has dementia. We did not know this at the time but it has progressed very quickly since his death. She has fallen five times since then. Been in the hospital for UTI's and gone to rehab. She now lives in an assisted living facility. Over the last 5 to 6 months she has declined and is not eating and sleeping most of the day now. Refuses to go to meals and wants to be alone all the time. I am trying to understand this disease. Can someone tell me what to expect. Life expectancy? I'm really worried about her. I've lost my uncle and then my mother in a period of 6 months. The stress is hard. Any information would be helpful.