It took her a second to realize the person she almost pancaked was someone she knew. "Sofia! Hiya!" A few seconds after she did a little victory dance (...yes, really) over her mastery of shopping-kart-fu, Megan paused as if she realized her antics would likely get her in trouble with the store's staff. She glanced around a bit furtively but she didn't see anyone in that god-awful khaki uniform, and didn't hear anyone yelling at her to step away from the cart and please clear the premises.
With the coast clear, she struck a casual pose and put her hands on her hips (poorly outfitted, considering the weather, but Megan never seemed to wear enough clothes--at least she had tights on underneath those shorts.) "Fancy meetin' you here!" You know, like she hadn't been doing anything reckless two seconds before. She was, after all, a Mature Responsible Adult.