For their brothers, there would have been some dragging of feet and huffing of breath. For Susan, Lucy tends to start drifting readily at the barest summons, one hand feeling curiously at the particularly shimmery fabric even as the other moved to link arms with her sister's.

"Perhaps it's an unfortunate practicality." This particular dress doesn't feel overly practical, but very little has ever stopped her imagination. "Unforgivably hot weather, hm? Or a constant need to run off."

A impulse Lucy could certainly understand--coupled with the immediate understanding that it would be an easier impulse to indulge in if one didn't have to hike up fashionable skirts to accomplish it.