Okay Mia, think, analyze. Was Zel trying to get back on Mia's good side because she realized she had to, to get Mia's brain working the way she wanted? Yes, certainly, but was she actually in a good mood, or was it an act, and she was one second away from eviscerating Mia and making her eat her own guts? Down here in Hell, Mia could probably survive that, and she very much didn't want to know what her afterlife guts tasted like. She didn't want to die either, and learn if she'd become the first unmarked remnant, go straight to the Great Tower or whatever, and... any of that....