After Ty Lee, Mai and Zuko shared they're "Sob stories" as Azula put it, she began speaking

Zuko: "I guess you wouldn't understand, would you Azula? Since you're so perfect."

Azula: "Well, yes, I guess you're right. I don't have sob stories like all of you. I could sit here and complain how our mom liked Zuko more than me, but I don't really care."

She then stares into the fire

Azula: "My own mother thought I was a monster... She was right, of course, but it still hurt."