I have found that Katniss tries to act like she cares about nothing and nobody. She does this very well by covering up any emotions she ever has and keeping a straight face. For example, during the reaping she is brought up onto the stage because she is a tribute to the Hunger Games. This means she must fight kids from other districts till death. She is as scared as anyone would be. However, she will not let anybody see how she feels and acts as though she is okay with risking her life. "I cannot afford to get upset, to leave this room with puffy eyes and a red nose. Crying is not an option."
The only time when Katniss has shown any sign of sympathy or feelings with everyone was when her younger sister, Prim, was chosen as tribute for the Hunger Games. She felt she had no other choice but to volunteer and take her sisters place. She did this because she loved Prim and couldn't stand to watch her little sister be thrown into an arena to kill people and possibly be killed herself. "That's how I feel now, trying to remember how to breathe, unable to speak, totally stunned as the name bounces around the inside of my skull." Katniss shows the love she has for Prim by saving her from the games. "'I volunteer!' I gasp. 'I volunteer as tribute!"
This proves that Katniss really is an emotional person. She just has a rough time showing it. It makes me wonder why she is so private. Why she has to be that way. As I read on, more and more of Katniss' thoughts and internal feelings are being shown but not so many actions like the one in the beginning where she took Prim's place. I'd like to see what else she does so I can learn more about Katniss as a character.