My mom has been in an assisted living facility for five years now, transferring a couple of years ago from the "retirement" building to the "assisted" situation when her care needs became greater. She was diagnosed officially with dementia in 2008. Although she appears to be doing very well, considering she just turned ninety-seven, she has been going to bed lately in the middle of the day -- sometimes in the late morning, other times in the afternoon. Since I visit her every morning, I am the one who gets her back out of bed for her exercise class when this happens; the care staff often find her in bed in the afternoon when they come to get her for another activity. This seems to be happening more and more frequently. She very recently had a thorough physical, and her blood pressure, pulse, and other vital signs all were within the normal range. But is this normal? I am, of course, concerned that we have entered a new stage of this disease. Thank you for any input you can provide.