Dymentia....

My mother-in-law was diagnosed with dymentia (sp?) about three years ago. She is on several different medications, but still has more bad days than good days where she lives in fear, worry, anxiety, wondering if she is going to do something wrong. (She has taken pills before, trying to end it all. It doesn't seem to me that the medicines do her much good except to sedate her. Is there anything else that you know of that might help her?