She makes a pointless grab after him and leans over the railing, staring until he resurfaces. And then she just can't help it. The laugh forces its way out of her, puffing her cheeks out and making the first hint of amusement sound more or less like pffthbt.

Then she's downright cackling, clinging to the rail to keep herself upright. The sight of his hair alone, stuck to his face like a weird mask, is enough to make the day of shopping worthwhile.