How does Katniss take advantage of the remains of the fire the the girl who was slain left behind? What does Katniss actions reveal about her?

Instead of getting frightened at seeing a fire and a girl burning, Katniss seemed rather desensitized to death. This is because she had been hunting for quite a time and had seen blood and killing several times so loosing life was not a new scene for her

Also she had seen people starving to death so these events had made her insensitive to deaths and this was different in her than the other people around her