My 72 year old mother is having some really weird symptoms. She is either dreaming or hallucinating and it is always the same scenario. Someone (usually my dad who passed two years ago) comes by then they leave and say they will be back but they never come back. She has cooked three different meals for people she thinks are coming for dinner but never come. I have taken her to her regular md and they ran all sorts of blood, urine, ct scan, they suggested she see a psychiatrist. She put her on Donepezil and Resperidone. She has been on this for almost three weeks but does not seem to be helping. Any suggestions?