How does Malala develop her central idea in Part 4?

Up until this point, Malala has narrated her memoir based on her own firsthand observations and experiences, save for the brief time she spent talking about her parents' childhood. In the aftermath of her shooting, however, she was either unconscious or had no memory of the events. Thus, for the first time she is narrating her own life based on what other people have told her happened. Readers have to place a lot of trust in the people who fed her this information, because Malala did not see any of this with her own eyes.