So it was the Curse Cat who drew those circles on Oshino's face?
I just reread Kizu, the fact that Oshino lost every encounter makes it even more shocking. Guess that's how formidable Hanekawa is, even the Curse Cat turned into a stress relief tool for her.
Next episode is the last.I expect Araragi will try to help her and, like the majority of the time, will become the usual regenerating punching bag until the case is solved.