That's how they do it. One sounds nice, and an angry one waits for her to come out so he can do... something. She doesn't see any weapons, but that doesn't mean anything.

Still, she feels less hemmed in. Keeping the knife aloft, she starts to creep along the fence to her right. Maybe there's an opening if she goes a bit farther, and if nothing else, at least she'll be putting more distance between herself and the two-leggers.