My Mother got up at 6:30 am this morning as my husband and I were still sleeping. She was disoriented and talking jibberish. We told her that it was very early in the morning and to please go back to bed......she did.....but she has been sleeping ALL DAY LONG? I kept going in periodically to see if she was up and let her sleep till 2 pm until I went in her bedroom and asked if she was alright and needed anything to eat or drink. She said she was tired and not feeling well. Asked her if she wanted me to call the doctor but she said all she wanted to do is sleep. I touched her head, and she was not running a fever. Is this normal at this age? She has slept late many times lately but never the whole day and the next day she was fine. Any suggestions?