She actually wasn't expecting him to change his mind so easily; it seemed like he wanted her to leave her alone. Not that she minded, of course, but she was in a bit of an awkward situation to do what he asked.

"Oh, sure, it's just that - uh... can you wait a couple of minutes?" She smiles oddly, glancing outside of the stall. "I kind of need to relieve myself and maybe get some clothes on."

A funny thought passes through her head, which brings a more genuine smile to her expression. "Not that I really care if I travel around like this, but it might look weird for you."