After several moments, he starts to realize that, young or not, she is absolutely taking what she's doing seriously, methodically working her way through the movements with the intention of someone putting down muscle-memory they want to rely on for years. Even coming from a background that's more sports than combat, he can recognize that much.

He waits until it seems like there's a break in the flow to stroll up, lifting a hand in greeting. "Hey, that looks pretty cool. What are you practicing?"