Iroh

"She has made her own choices. There is only so much that we can shield her from that, and less that we should. It is fine line to walk, Prince Zuko. Protect someone too little and they could be badly hurt or die, they could break, they could change as a response to that pain in ways that they can never recover from. Protect someone too much and they never learn or grow, they never change at all. Everyone who tries to protect anyone ever will make mistakes sometimes, Zuko." He certainly had. "But that too is something we learn from."