In the book "Catching Fire," by Suzanne Collins, Katniss is ignoring the fact that Peeta and her will die if they do not find any water to drink and is worrying about Finnick betraying their little group. Katniss tends to over worry herself and focuses on staying alive, watching Peeta's and her back for Finnick. How can she worry about Finnick killing Peeta and her when they themselves are dying from the lack of water to drink.
Katniss should stop worrying about Finnick trying to kill Peeta and her. She thinks that Finnick will kill Peeta and her when in realty, anyone or anything (Including the game makers) can wipe them out. She needs to worry about anything or anyone killing her, and that includes dying of hunger or thirst.
I believe that the author sent a message saying that when trying to protect your self, don't focus on one factor, focus on every single one you can think of. For example, lets say I was being chased at night time, if I stopped, the person chasing me would get me. However, if I wasn't watching where I was going and ran into the street without looking at what color the light is, I could get hit by a car. Open your eyes! When in danger, the possibilites keeping you from safety is endless.
