My 88 year old mother lives in a Senior Residential facility that has independent living and assisted living. For the past 3 months, she is fixated on an individual cleaning lady who she believes is stealing from her. Mothers situation is complicated with short term memory loss and even though we have found virtually everything she has reported missing, she forgets what was found and reverts back to what she believes was stolen. She is now calling the worker a thief to her face, has reported her suspicions to her facility management. She has become very agitated over this and with her doctors support, have prescribed medication to calm her down but this is now not even working. I know and have experienced attempt to explain it could be her memory only aggravates the situation and creates more frustration. What do I tell her? Is there anything else I should be doing.