My 95 year old Mom constantly crys and moans while sleeping. This started about a month ago. She also somehow watches the clock,and I will hear her saying 1:15, 1:16 etc. Then at other times she will moan and thrash about with her legs and arms waving about. She will cry "God help me, please help me" over and over. When I ask her what is wrong she will look at me, and babble incoherently. She looks totally out of it. Then she will eventually snap out of it, and usually needs to go to the bathroom. Is this common with dementia? She takes no sleeping aids or drugs that should affect her sleep.