The Question and Answer section for The Kite Runner is a great resource to ask questions, find answers, and discuss the novel.
Rahim Kahn tells Amir that "there is a way to be good again". Amir needs to go to Afghanistan to save Sohrab, Hassan's son. Amir's betrayal of Hassan so many years before still eats at Amir's soul. Going back to Afghanistan to help Hassan's son is...
Did you mean the kite maker or kite runner?
Assef is not mentioned in either chapter in the text.