Karolina was honestly so woefully unused to anyone (or at least anyone who wasn't a gross guy on the street) being unsubtly suggestive at her that she wasn't going to be mustering any second-hand embarrassment, here. Too busy being slightly flustered for that.

Brushing her hair back a second time was wholly unnecessary.

"Well, I mean... It's good to try things, too. It's the only way you find out what works."