I guess. I thought Azula would be so focused on killing me, so she could be Fire Lord and get revenge, she wouldn't consider attacking Katara too. She was unstable. And I didn't realize Katara was that close, there was no way she could get out of the way in time. I know how to redirect lightning, I didn't want to watch my friend get killed by my sister, and so I intercepted it.

I don't care who stopped Azula. We're alive, and she's not in control. That's all that matters.