My mom (with Dementia/Alzheimers, 87 years old, pretends she is sleeping, and then when we walk by she jumps as if she got startled. It is so obvious that she is pretending. This happens 40 to 50 times a day EVERYDAY!!! It drives my husband nuts. He always turns the TV off when he sees her pretending to be asleep and then she opens her eyes and is really mad that he turned the TV off. I just ignore the behavior, but it does aggravate me. Does anyone else do this, or is she unique with this little habit.