"If this is an attempt to be intimidating, it's very effective..." Imogen plays up her fear as a weapon, hoping the idea she's off her game will make whatever is here overconfident. Whatever it is wanted fear, for whatever reason. Or at the very least didn't care what it scared in it's activities.

"But we can be of use if you're in need, and we don't want trouble." But we will bring it if you insist.