Maybe it's just how you know her. My Pdoc called me once before and said hi this is (first name). I was trying to figure out who she was because I didn't know anyone by that name. My T signed a hand-written letter to me Dr. X. That bothers me too. I don't know her as Dr. Or when I've seen teachers from my past, they are still Mr., Mrs., or Dr. so-and-so. My mom was a preschool teacher. When past parents run into her now, she is still Mrs. (first name). I think the way we address people is extremely important to us. That's just my opinion.