I feel like TSR would have had the exact same result without Aang's intervention. I don't think Aang's "advice" for Katara had any influence at all on her decision to not kill Yon Rha.
It just showed us that Zuko understood Katara's needs better than Aang and that Aang didn't trust her to make the right choice.
Exacty! She didn't choose not to kill Yon Rah because she forgave him, or saw the sanctity of his life, or whatever nonsense Aang was peddling. She chose not to forgive him because he was pathetic. Had he made any move towards defending himself, that would have been the end of Yon Rah. She says it, out loud, in the end that Aang was wrong about what she needed, and she was right. She didn't need to kill Yon Rah, or forgive him. What she needed was to confront him- confront her biggest trauma and realize she was stronger than it. Just like Zuko needed to confront Ozai. Aang wouldn't understand that, though, because Aang has never actually had to confront any of his trauma. Any time he got close, the narrative shielded him from the weight of it.


























