We know that they're trying to kill us, and that they won't stop.

But this argument wasn't important. She'd never tried to force Aang to kill anyone, she wouldn't do that to Sokka. If he really hadn't been bothered by it... then maybe he was right, and he needed to stop. Even if it meant she was all alone.

She could still see her shower run red with other people's blood...

"Alright," she said quietly. "If that's what you think you have to do, then I have your back."

And I will do whatever I have to do in order to keep you safe.