Because my dear husband passed away, I've been reading alot of books to help me cope and understand things. When he was on Hospice I read the book "Heaven is for Real" by Todd Burpo. I would also read excerpts to my husband as he was laying in bed.
After his passing I've read "A Grace Disguised" by Jerry Sisster. I daily read "The Daily Bread"
I'm now reading "Grieving the Loss of Someone You Love" by Raymond R Mitsch and Lynn Brookside.
I will say a prayer for your Mom to get the sleep she needs. I know that lack of sleep causes the dementia to be worse..((hugs))