No no no. She has to believe he's not here! Maybe if he uses more big words he only half understands she'll think he's someone or something else! But the doctors were never very good at explaining what they were talking about, so he's not really sure what to say.

"I'm not Aang. I'm...what you want to see. And I'm older because--uh... to represent the time! We've been apart. But it's magnified, because it hurts to be apart, so it's like even more time has passed than the time that's passed. And--"

And... this is not working, but she can't think he's real. She can't.

"I'm not really Aang. I swear! I'm just, the part of me--him, that's right here."

He taps her forehead.

"And right here."

He taps the center of her chest, near her heart.

"And the thing you have to remember is--that's where I'll always be." He closes his eyes tight. "You'll have to remember that."