Lots of questions, but they are interrelated.

Does your T advertise his/her services on a personal website, local media, GoodTherapy or similar site?

Was that information part of your consideration in first interviewing them?

Has their advertising changed over time? Are they marketing to a new or broader clientele? Asserting new skills?

Knowing your T as you do now, do you think they have accurately described their own strengths?

As for me...My answers are yes. Well...mostly yes.