Thanks, Lost--I appreciate the solidarity!
He sent a fairly good email response. Though it was sort of funny: One thing I said, regarding how it might not just be the transactional thing, was "Adult [LT] gets that you could use a vacation/time with family, but Little [LT] feels abandoned." Dr. T quoted that and said, "I read this as you experiencing feelings of abandonment around my taking time away from work for my family." Excellent reading comprehension skills there, Dr. T! He also said that seemed more "in the transference arena" than the money thing, though I think both are there in some ways.
He said we should talk more (at some point) about how "your strong feelings around how the transactional aspect of our relationship impacts you." And also the abandonment feelings, "as it may help us get deeper into how you experience, think about, feel, and connect regarding our relationship."
I figure right before his vacation is probably not the time to examine these things (kinda risky), though maybe I'll talk about them with R next Thursday to better understand what I'm feeling and how to translate it to Dr. T-ese (she's helped with stuff like that before)
There was some other stuff in there, too, of mixed value. I did appreciate how he closed it: "Overall, I’m sorry for the stress all this uncertainty and change has caused. I know it’s been difficult for you. I will continue to do my best to support you through the transition, and I appreciate your efforts to accommodate and adapt to the shifting landscape." I think that's a big part of what I needed to hear.