There's no need for an apology. [She smiles easily.] It was only a rock, after all.

[It's not like he stole a comfy cushion or anything. She might have been a little less willing to give her seat up, if that was the case.

His question is what causes her composure to break for the first time. It's only for a brief moment or two, and the expression that passes over her face could be described as "chagrined." She knows the answer isn't going to make her look very good... ah, well.]

A couple of hours, I suppose... well, it's probably closer to four or five, at this rate.

[She is hopelessly, utterly lost.]