RT--It seems like this whole idea is yet another way to try to control some aspect of the relationship/environment and is a distraction from the work.

For someone with ED, there could be very valid reasons for eating as a part of the therapy work in session.

I see it more as I do with my classes: I teach a class late in the day when all of us have been working without a break for 6 hours due to scheduling. I've told the students they are free to bring something to eat to class. But they generally bring something small, not a full course meal, and I usually refrain from eating more than a granola bar while setting up. Practicality rules in this case. But to twist a situation to include an activity that isn't necessary seems contrived.