[@Flamelord] That's just a lot of metagaming in my opinion. Specially since Chiyo was supposed to be in Mitakihara by now. I bet she can go there and come back by bus in one night, so she might as well have an alibi.

Also she might must say, "Ask the Contractor if I wasn't with him last night?" Kyubey never lies, but he also never tells more than he's asked, to, so she would have a good cover.

Anyway, a new mysterious girl who indeed uses a stabbing weapon will arrive in the city. So you have at least another suspect, not excluding the possibility of yet an unknown girl existing.

SI yeah all that was metagame based theory. In my view and I find it hard that[@TheWindel] or [@MarsAdept] would disagree with me.