Well, she's a kid, and this is surprising. If she's new - and Kozakura hasn't seen her around, not that means anything - reacting like that is normal.

Still, it's important to be more than ready for the unexpected like this.

She nods, and lets her expression return to neutral. "Unless something is coming right at you, or someone else, it's better to stay in place, take a deep breath, and get your bearings, instead of running around." ...it helps that this is not a scary situation really. "Start from there and you'll get the hang of it."