If I were still a songficcer, the song here would definitely be "Bright Eyes" by Simon and Garfunkel.
*
The Avatar falls, Katara cradles his unmoving body in her arms. Angry tears glisten in her eyes as Iroh tells them to escape. Azula smirks.
The powerful fire blast struck Iroh, Zuko gave an anguished scream as he fell to the ground in pain.
"Uncle, let me explain-" he begins, but Iroh can't even look him in the eye as he surrenders himself to the Dai Li. Katara takes this time to escape with the Avatar, but not before casting one last hate-filled glance at Zuko and Azula.
"I can heal him," Katara said, but he was too overcome with anger and grief; he threw a violent burst of fire as he screamed at them to leave, just leave.
Azula assures him he did the right thing, but as Zuko lies awake in his bed that night he sees the Avatar fall again and again, sees Katara's tears.
"It's what you've always wanted," Azula lies, and it's all he can do not to cry.
"Here, I made it just the way you like it," he lied, Iroh tried not to grimace.
Zuko squeezes his eyes shut. The Avatar falling, Katara's tears.
Iroh falling, his own anguish.
"What have I done?"