As a matter of fact he did. A few days later, I asked him where dad would be. So that night, I went to take Appa to the Boiling Rock prison. [He continues on to tell her about how Zuko went with him, their time in the prison, finding Suki, and eventually all of them escaping.] ... if Zuko had been planning to betray us, he could have turned me in at the prison.