No, she didn't say that. You're thinking of that "After the Darkness, There Will be light" story. She said it on there, but not on the real episode. But it would be funny if she really said that. She said something like:
"You may have everyone else buying you 'transformation', but you and I both know that you've had trouble with that in the past. So let me tell you this right now. If you take one step backward, one step out of place, or do one thing that makes me think you're gonna hurt Aang, and you won't have to worry about your destiny anymore. Because I'll make sure your destiny ends right then and there. Permanatly"

I don't know...I don't think that's exactly what she said, but it was close to that!
And I think she had the right to threaten to KILL him, too!!!
(And so the ranting, raving, and fighting begins )

Ack, as a Zuzu fan-girl, I have to disagree. Sure, she can be dreadfully sarcastic to him like she's been in the next few episodes, that's funny, but I don't think she had any right to threaten to kill him. I mean, I guess she hasn't seen him change like we have, but still.....man, I'd love for her to see what he gave up to come help Aang. Mai, his life as a Prince, Mai, actually having his father like him again, and did I mention Mai?

Well, *crosses arms* as a non-"Zuzu-fan-girl" I have to disagree! Besides, do you think she'd really care if she knew what he was giving up?? His father never would have loved him, anyway! So there's no chance there. There never was a chance there!

He still had Mai, he gave up someone he loved! I mean, I guess she can do whatever she wants, I just don't like that she made a death-threat to him. If it had been anyone else, I probably would've cared then, too......but I care more because it's Zuzu.

Yeah, yeah, yeah...

Well, point in case, I was glad when Katara made that death-threat to him. Maybe it's because, even though he's good now, I never really liked Zuko....

Yeah, I can't really remember, but I don't think I liked him much in season 1. I only really liked him in "The Storm", when they showed how he got his scar. I LOVE that episode!

Yeah, that episode was good!!
I liked when they showed Aang's past more, though.

Yeah, that was okay, but I'm not that much of an Aang fan.........which is kinda funny, considering the show is about him.

Let's see....So, you're obsessed with Zuko...Anyone else I should know about?

As you know, Sokka with his hair down, uhhh......Haru was kinda cute when he didn't have that HORRIBLE goatee.........uhh......Zuko before he got his scar was kinda cute........

*starts talking in a baby-ish voice, like you would to a puppy* Awww, who's got a cartoon issue?? You do! Yes you do!

Don't worry, I do, too! XP

*Glares* For your information, I do not have THAT much of an issue. I only act this way around you guys. Aren't you lucky!

Oh so very...

Well...you and I are very...similar, if you could say that.

Yeppers. (Oooh, haven't used that one in a while!)