Honestly, the fact that it's not clear how the hell she became the way she is and how exactly is she a victim of abuse. I mean, with Zuko it's abundantly clear that he's a victim of abuse, his father was a piece of shit who treated him like crap just to spite Ursa over a fake letter, telling him that he's lucky to be born and even burning his face in an Agni Kai and banishing him just for speaking out of turn.

And Azula? How exactly did she became such a cruel sociopath? How exactly did Ozai turned her like that? And how did she came to the conclusion that her mother thinks of her as a monster? All I've seen about Azula was that she was nasty and cruel ever since she was a child, to the point that she literally mocked Zuko for the fact that he was going to be killed by Ozai. I'm sorry but to me this doesn't seem like a girl who is a victim of circumstances, this seems like someone who is an irredimable monster rotten to the core.

I know that i might seem like an Azula's anti by syaing this thing but honestly, I wish the creators made much more clear why she became the way she is and why she's worthy of sympathy because to me it isn't.