How does the following quote prove that Katniss is "brave"?

Even though trespassing in the woods is illegal and poaching carries the severest of penalties, more people would risk it if they had weapons. But most are not bold enough to venture out with just a knife.

Is there any other evidence in the novel, that states, I guess, that since she had the experience of using weapons, she could fend off for herself?

Also, considering Katniss knew that hunting was illegal, and she could get publicly persecuted for doing such things, what prooved, that she was brave enough to do it anyways?Apart from that quote.