Today I got up the nerve to ask new P what she wanted me to call her, Dr.S or her first name. She said whatever I want is fine with her. She said younger clients often seem to want to call her Dr. but "mature" clients (I guess that means older?) often prefer to be on a first name basis. So maybe there is an age difference factor involved here that I did not consider. I still did not call her anything yet, but I like knowing that she does not insist on me using a title to boost her ego.