Katara sighed. "Not arguing with you there. Still, Aang had to go through stuff like this all the time with spirits. Maybe we just have to look at it that way. I mean, I don't like being here anymore than you do, but there's no point in freaking out about it."

Not outwardly, anyway. Katara was MORE than willing to freak out inside.

"But Aang is the Avatar. If we were served for a greater purpose, it would want him, wouldn't it? It wanted me, and I'm a master warerbender, and it wanted you, and you're a really good swordsman. Why stop there?"

For now, she'd serve Sokka's ego. For now.