It is a hard one to figure out. It seems you've covered all the bases. Her body looks great as does her pattern and shine. I guess you could try to drop temps a bit more, but I'm not sure how you have it set now.
I use a 5 degree night drop in all of my cages. This drop along with low or no light always causes our snakes to become very active at night. Once the morning hits and the temps ramp up they all settle.
Phylis is at the very least some type of SD/D locale maybe not exactly what you thought but even still she's part of the SD equation. They (SD locales) typically have very seasonal eating habits. Mostly based on migratory birds, and other animals that become active when the birds flock to the smaller islands.
Breeding behavior in a lot of male retics sends them off feed, I could certainly see it stimulate the feeding urge in a female, at least for a short time prior to courting as they want to have their tanks full so to speak.
That said they (retics) are ALL ambush predators that don't constantly eat, and don't constantly forage. They may do some active hunting at times, but that requires and expends a lot of energy which reptiles are experts at conserving. Retics, may be one of the more, if not the most active of the boas and pythons but they are not designed for constant movement.
Pinpointing the cause of pushing is difficult. I don't deal with it, but that doesn't make me an expert or prove my setup or husbandry is spot on. I may or may not deal with it later on.
I don't think simply throwing food at the problem is the answer at all. If it stops the pushing, it only seems to for a short time in many cases. A day or two of digesting with the pushing resuming shortly after indicates SOMETHING else, but I'm not sure what.
I think JM is trying everything he can which is all he can do.
If somebody had an easy solution, it would certainly shorten this discussion.
