The look Regan gives her isn't at all dissimilar from the expression Rosie had worn the first time she tried puzzling out the little pictures inside the instruction booklet. She laughs, giving the other girl an exaggerated shrug in agreement--or commiseration.

"Cost, I think?" she answers--though given how much she'd spent in total yesterday, that theory didn't quite hold up. "They can sell it for less money if people are expected to put it together at home."