She thinks following the guard captain in stealth is a good way to get on the guard captain's bad side if anything goes wrong. Her first impression of him in that bar was also that he's shifty, gave a false name, and that his story about the kobolds didn't add up with wanting to go hunt giants. She has strong opinions.

(my personal worry is that if any of these rolls you're doing go catastrophically wrong at a bad time and you get thrown in prison or something, none of our characters are going to want to help you.)