Quote 10
The little girl who was watching me kneels beside a motionless woman, screeching and trying to rouse her. Another wave of bullets slices across the chest of her yellow coat, staining it with red, knocking the girl onto her back. For a moment, looking at her tiny crumpled form, I lose my ability to form words. (24.51)
This is a taste of the awfulness of the battle that's about to come. Innocent people are dying. Children are dying. And Katniss can't do anything to stop it. To make matters worse, there's no one side of the fight that's good and one side that's evil. Both sides are acting without compassion and are using inhumane tactics in their attempts to win the war.
Quote 11
But what he's said makes no sense. When they released the parachutes? "Well, you really didn't think I gave the order, did you? Forget the obvious fact that if I'd had a working hovercraft at my disposal, I'd have been using it to make an escape. […]" (25.37)
Katniss is horrified by the discovery that the deaths of those children and her sister were not caused by Snow. That's right – the people on Snow's side didn't slaughter those children. This atrocity was committed by the rebels she's been fighting alongside.
Quote 12
The authorities in District 13 were against my coming back. They viewed it as a costly and pointless venture, given that at least a dozen invisible hovercraft are circling overhead for my protection and there's no intelligence to be gained. I had to see it, though. So much so that I made it a condition of my cooperating with any of their plans. (1.3)
This quotation shows that Katniss is both powerful and powerless. She's being asked to be the face of the revolution and, as such, she has a certain amount of power. Yet she can't just go do anything she wants. In order to go back to District 12, she has to bargain with the other powerful individuals and give them something in return.