Could you just tell her that you are concerned, what your concerns are and why? I would just tell her.
The first one I saw had a terrible memory. I am not kidding when I say the only reason I think she remembered my name was because she wrote it down in her calendar each week. I don't think she had any independent recollection. She asked me about a cat a week after I had written and told her it died. I don't think they pay that much attention nor do they try to retain info.
The part that pissed me off was when she would guess rather than just ask me.