Azula won the Agni Kai.
She wants history to remember that; to know that even in the midst of a mental breakdown she didn't fail her nation.
That she was the perfect daughter.
There are rumors that she's crazy, but she's not. She took down Ba Sing Se, killed the Avatar (Azula is 100% sure he was dead for at least a second before being revived by some Avatar nonsense), and captured The Dragon of the West only to be discarded by her father whose brilliant plan culminated into using Sozin's Comet to burn everything.
Really, how was she supposed to react?
She doesn't voice this of course; it wouldn't work to her advantage. Azula keeps her mouth shut and her ears open.
She hears the Avatar has won. She'd be disappointed if he hadn't. Truly skilled benders know there's more to bending than brute force. A lesson that has evaded both her father & brother.
She hears that Fire Lord Iroh has declared a National Tea Day. Typical.
And that Zuko will take the throne once he comes of age & has proven himself worthy of the honor. Yawn.
She hears that Prince Zuko wishes her a speedy recovery. Liar.
She hears the Avatar is coming to visit.
Azula has done her best to hide her soulmark. It has been covered by a straitjacket for the majority of her stay. To the best of her knowledge no one has seen her soulmark, and she has had no one to tell. If the Avatar is visiting then that means his soulmark has appeared and is as recognizable as her own.
It is not a conversation she wants to have so Azula leaves before he arrives.
Escape is easy with airbending.
