1) I knew it's something like a sacrifice. Like I said before, kyouko does this because it has to do with this whole realm concept. So, my other theory is debunked, righhhttt? still, the coworker's actions still don't add up.
2) I knew kiyouko was gonna be something like a hunter (like what I said previously) but she is more of like a savior.
3) I knew it's gonna be like her catching creatures or something to save the world from this realm.