Everyone goes through it, so Kanda can't really blame her for her reactions, private or not. It's just a question of when it happens, because it comes at different times for everyone.

Kanda stopped himself when he was bumped into, a hand automatically reaching out to watch whoever it was that ran into him. It took him a moment, but he realized that he hadn't seen this woman before. Well, this was. It could be potentially be awkward, anyway.

"It's fine. When did you get here?"