"Yeah, sure, uh-- let me just..." She shrugged her bag off her shoulder, wincing as her textbook fell out from where it was sticking out of the zipper. That's what she got for not closing her bag properly before running out after Derek.

She crouched down, picking the bag up, before taking her phone out and holding it out for Derek. "Here. Put your number in there, and I'll text you so you've got mine."