I just had a moment of I knew that, but I hadn't really thought about it.
I'm still on my reread. When TUE posted early, I wasn't done yet, cuz I still had all kinds of I-have-to-be-at-work-but-have-nothing-to-do time on my hands, and then after it posted, I slowed down. So I'm just rereading Wind-up Boogeyman, and damn if it wasn't right there, staring me in the face.
There was too much coincidence, and she didn't believe in coincidences.
F$ck. There's that thing we don't believe in again. That's where it started. Dammitall, the Thing broke her with the Team's own mythology.
Somebody should tell Stephen Reyes. Not that he could've prevented it -- the Bug can break someone with anything, if it can do it at all -- but he ought to be aware.
ETA: Aaaaaand the corollary just hit me. If "Coincidence: That's that thing we don't believe in again" cracked Hafs, then "There are no fates worse than death" saved her. Nnnggnggg.