This is not strictly TSG compliant, so Edmund is more perceptive here -- or perhaps they were going to draw straws and Peter said, I did the first one. YOU do this one, Ed. I'd originally had Peter being the one delivering that second set of instructions to Eustace, but then I realized that given the fandom assumption that Jadis abused Edmund, it was more powerful if readers assumed that backstory -- not one I adhere to from bookverse, but that is certainly entrenched in fanon. Thanks so much!