My grandmother is on this also, while I can't be there as much as I would like due to distance and kids need to stay in school, my uncle is with her full time. Growing up he was never big into religion like my grandparents/his parents were but it seems he's found some comfort in it. The local chaplain comes by pretty regularly, gives both of them some comfort, at least we think it does. She has dementia, not sure what kind exactly but she doesn't know hardly anyone and is not "here" most of the time. Other family and friends seems to help him, that and finding a hobby you can do at home, he reads a lot and we talk about games like Monkey Island a lot too.