This is an excellent question and one that is best answered by your mother's primary care doctor
or mental health professional. If the doctor that she is working with currently is not felt to be helping her with the issues she is having, you may consider recommending to your mother that she see another doctor who might be more willing to work with your mother. On the other hand, her doctor knows her very well so it may be that he or she is trying to wean her off those medications. Either way, it is prudent that your mother have a discussion with her doctor regarding the issues she is having and the concerns related to her medication. It is likely that this will straighten out whatever concerns are present, and if not, then consider seeing a new doctor to see if they are able to help sort out this medication issue. Since it is not clear what the entire history is from the limited information provided, only your mother's doctor and her will best be able to discuss the issues and come up with an appropriate plan for how to make her feel well again.