Not sure about the sleeping at age 72; although if you really think her doctor doesn't care, then seek a change and not accept that he/she is just part of an entire group not to be trusted. I care for a 93 yr old mom w/ Alzheimers (sleeps maybe 2 hrs throughout the day when we are n ot doing exercises or she is working in a word book) and decided that once we can no longer ensure maintaining her hygeine I'd look to institutional care as they are often better equipped to handle that. Plus as someone loses their connection to you the emotiional impact of letting go for them and you can be less...Good luck.