How can I get the assisted living facility to do a dementia evaluation on my mother?

My mother has dementia but is living in an Assisted Living apartment as a part of a larger nursing home community. We have been trying to get her moved to the dementia ward, but they say she should go into one the regular nursing home wards. I asked that the dementia ward do an evaluation but all they did was a 'record' check as the nursing station said mom was too emotional and anxious if they tried to evaluate her. The records recommend that she go to a 'regular' nursing ward and state that she is uncooperative. She has incontinence and she doesn't like others helping her with her Depends. She doesn't like or accept that she needs help with bathing. How do I get a good evaluation? Her internist no longer wants to see her as he says he doesn't "deal with her issues of confusion". We are in southeast Wisconsin and it is not easy to get her out of her home to a doctor, as she can't walk and can barely help herself in and out of a wheel chair, much less a car. I don't know what to do next.