Her reaction is palpable. She's been playing a good game for a while now, but she was seriously starting to worry that she'd have to walk home in the rain or get further harassed by that guy--and she literally could not handle either of those things right now. So she sighs and walks easily, sticking under the umbrella and chattering in such a way as to complete the illusion all the way through.

"I was supposed to get picked up by my friends, you know, but they're all too busy. Or whatever." Her dramatic eyeroll turns into a good excuse to glance back behind them, make sure they aren't being followed. "So I'm super glad you brought the umbrella. You're a lifesaver, really."