Hey look, Himari's absolutely batshit insane first episode was finally explained 70 episodes later. I'm not sure I quite buy it, especially given the widely discussed individual that personally delivers Vivi's bracelet in a bit, but hey...

>>281677927
At the most charitable, I'd assume something along the lines of that the others wanted to become idles, instead of already being idles. However, I think the far far more likely explanation is simply that she didn't think. Full stop.