[This is Kumiko's curse: She can't keep her foot from being jammed in her own mouth.

She jumps, slapping a hand over her mouth now that she realized she said something really careless out loud again. ... She's so bad at this.]

Um... You used -mashita form to imply past tense when you referenced the future. The year's not over yet. [... Wait if she messed up tenses, then did she understand anything Kumiko just said?] Ah... you got that, right?