@roseate_cynic I'm just amazed that Shiki thought absolutely nothing of Haijima's first attempt to make her stop. It carried a kind of serious undertone as well ("keep your nose out of my business and concentrate on your own" is a somewhat brusque way of saying it). However, Shiki didn't care, and my guess is because she has a kind of dark mind herself. After the failure, the nurse had no choice but to tighten the screw. Shiki thinks Haijima is the same as she is, but that's nothing but her own view of things. Maybe Haijima could have convinced Shiki to drop interfering with less hostility, who knows, but I'd say we can deduce from Haijima's actions in this chapter that she thought Shiki crossed a line she shouldn't have crossed. If the nurse had already given up on catching Hinohara, but then some brat comes and tries to mess things up, it's easy to understand.
@Oeconomist
Haijima has her old flame Hirohana on a path of potential catastrophe. Shiki's latest attempt would have steered Hirohana away from that path, though plainly Shiki was simply trying to help Haijima.
Haijima has the delinquent, Nagai, on a path of redemption. Shiki's latest attempt would have steered Nagai away from that path, though plainly Shiki was simply trying to help Haijima.
What did you say about readers failing to see how their conclusions are affecting (or effecting) how these readers have framed the story?