She jerks back, startled, only for her, the process involves her losing her form for a brief moment to explode into a cloud of dust. But don't worry, she comes back just a second later.
"Whoa-ho-ho!" she says as she solidifies. "Sorry buddy, but the only riot I know about is that racket that Miss Pain in the Neck is making! Anyway, you shouldn't sneak up on people like that. S'rude, you know."