In fact, in view of your mother's situation, the most important thing is her will. If her mother has a strong desire for treatment, I think it is really necessary to have a simple communication with the counselor first. Consultants are all compatible, there is no need to find experts casually (experts will not pick up)! If mother doesn't feel suspicious, then I think you must be more careful. Self-knowledge is the most basic criterion of psychological counseling.
I don't think your mother is that serious just because of her stubborn personality.
I hope I can help you!