I too am sorry that you weren’t informed of the dog’s passing.

Not all therapists are closed off to their personal life. My current therapist, L, is probably way too open. But my previous therapist, also a very good therapist, was much more closed off. I actually know more about her from google searching than what she’s been open about. I saw my last therapist for 4 years and L now for 6 years. So short-term vs long-term doesn’t really make a difference. It’s just up to each individual.