so this is a good start. If you can reproduce the behavior, I need the debug logging from my mod, which should walk through the logic as it occurs and we can determine where the fail is. You might need to enable debug mode in the game itself first, so you can see the logs (a small button on the top of the screen w/ debug mode on).

After that, enable debug logging in my mod's options. You should start seeings prints when this mods checks occur. If you can trigger the error at that point, we'll have the stacktrace embedded with the info from my mod showing (hopefully) where it was called.

I'll try to reproduce the error tonight after my wife gets home from work.

I have no idea whats different... But I tried to use dev mode to recreate the same situation. This time the doctor was, indeed, adamant about tending to another patient even with damage and while starving (just for added measure). This time it worked just as prescribed. Which doesn't help you at all. Sorry.

What I will do is keep the debug logging on your mod going. So if it happens again I can be ready to capture a log as soon as it happens.

HUZZAH!!! I had it happen again at random. So I turned on your debug logger and waited a few more seconds so as to log it happening. In this case, the character Sam was attempting to eat her food but kept getting stuck by stopping (as if to go tend the chocobo, Rubens) and then instead of going to tend, started trying to eat again. Add infinitum.

Here is the log. Hope it helps.
https://gist.github.com/HugsLibRecordKeeper/4f9481768c634fb60a32d8d234ab190a