She's always asleep when I visit regardless of time of day (I go at different times just to see). What I noticed is that most of the smaller women are always asleep, but the taller/larger women and men rarely are. When she was at the hospital her nurse mentioned this to me so it's on my mind now. I don't want to sound accusatory, but I do want to know how they manage the dosages.
So yes, she could be getting too much of something. Meds don't leave the body as fast in the elderly as it does in younger people.
If you ARE the POA you speak with admins and examine the medication records.
Do understand, however, that it is the norm for elders to sleep enormous amounts of time. More sleep than a cat who can average 16 hours a day!