My mother with Alzheimer's keep on asking me if I know where her mother's grave is, and why we did not tell her that her mother had passed and then she cries without end!!!! She then wants to visit he grave to put flowers on. The mother died approx. 50 years ago and she was there. She threatens to walk to the cemetery which is in another city 600 km for were we are now. When she is like this she refuses to eat, take her pills and is just very difficult. The nurses would call me at work to speak to her as this would help her to calm down- and today I lost it completely as this is happening for more than a month now. Any advise to me how to handle this is appreciated.