What is ironic, important, and satisfying for the reader about the way that Sohrab's role develops and ends?thanks in advance!
Sohrab is the son of Hassan and Farzana. He survives when his parents are executed but is kidnapped by the Taliban where he is sexually abused by a Taliban leader named Assef. This is ironic because his Assef was also the sadistic bully that sexually assaulted his father Hassan when he was a child with Amir. Amir did nothing to help out his friend when they were boys, so it is satisfying that he can finally redeem himself from a lifetime of guilt over that incident by now being able to help out his murdered friend's little boy, Sohrab. This is important to Amir because he can finally get rid of his guilt on some level, but also to his wife Soraya, who cannot have children with Amir.
When Sohrab realizes he may have to go back to the orphanage where he was abused, he tries to kill himself - so sad for the little boy from the terrible background - but Amir succeeds in bringing him back to the United States, where he adopts him. Sohrab has been traumatized and does not speak, but at the end of the novel, he finally feels safe and begins to speak, so that is a very satisfying ending to the novel, in addition to Amir doing something good to help out his friend even after many years and even after his friend has been killed. It almost makes us forget that through most of the novel, we have felt like wringing Amir's neck! Ha ha.