I'm guessing it has something to do with Frozen? Seriously, I should get around to watching that at some point.
Also, I like your avatar. I've always thought Koakuma was cute, and that looks like she finally snapped under the pressure of working for Patchouli.
It was an old game, ps2. Surpisingly made by toys for bob and activision.
Also I can't help but feel this is just how Koakuma is normally. Proper and calm when patchouli is around, when she's not looking AW YEEE PANTSU OFF DANCE OFF.
Kinda like Gunner-Chans sister actually.