Kinky Wriggle. Also, considering that Cirno is effectively immortal, she hasn't got much to lose. Heck, going by Dark Souls I think she can actually win/ make Yuuka yield by virtue of simply not staying down.
Also, considering that Cirno is effectively immortal, she hasn't got much to lose.
They're all effectively immortal. Maybe it was just the embarrassment of getting fried by Yuuka. All three of them did, but Mystia was obviously the most upset by it.
