CHAPTER 12
Ender provokes Bonzo by disobeying his orders and proving Bonzo wrong. Bonzo responds by punching him in the stomach, then eventually corners him in the bathroom and dies. Stilson is the boy that Ender hurts badly. Ender is thinking of him because he does the same thing to Bonzo and he doesn't mean to hurt them that bad. He expects help from the because if he didn't he would be without hope. I did not know that Bonzo and Stilson were dead until this chapter. The reader finds out that they are both dead when they overhear colonel Graff and major Anderson talking about their deaths. Well with Bonzo he was, because Bonzo planned to kill him first, with Stilson I think he went a little to far. They didn't tell him about the deaths because they didn't want him feeling guilty or getting distracted.
CHAPTER 13
That quote means that who you pretend to be you become. this is supported by the fact that Peter basically becomes Locke and the same with Valentine. Yes I think it is, I think that is how humans have survived all of this time, when humans are threatened instinct takes over.
The conversation between Ender and Valentine is about
It reveals that his enemies try t hurt him but he kills them so they won't ever hurt him again. Valentine still loves Ender but he kind of scares her, and she is afraid that Peter will try and take over the world. Well now Ender is the killer and Peter is the peace keeper. Valentine is now skeptical of both Peter and Ender.
CHAPTER 14
He thinks that it doesn't feel right, kind of nonhuman like. He figures it out in the end of the chapter because him and Graff discuss that Eros  is blacked out. He is the only teacher Ender has ever had because he actually learns things that are useful from Mazer. Because he feels that if he was honest Ender wouldn't have done it. No I don't think Ender could have, because he didn't want to kill Bonzo or Stilson he just didn't want them to hurt him ever again. Well sort of because they attacked us first, but then that is childish so no I don't think that is very justified.
CHAPTER 15
I think that that statement is partially true, the part about the role filling, but not true he could have walked away from battle school and never had anything to do with it. He is amused at the fact that people are trying to incarcerate him, but he feels that there deaths are like all of the other bugger deaths. She made sure of that because he is to easily controlled and could be used to take over the world. She thought that he would end up taking millions instead of saving millions. Well he learned that the queen wanted to live peacefully instead of fight. Because he is the speaker for the dead buggers.