“You have redeemed yourself to your Uncle. You don’t realize it but you already have….I once had a long conversation with the guy and all he would talk about was you.“
In defense of Mai, she is poorly written. The most interesting things about her are the consistency of her apathy and the fact that somehow her childish crush on Zuko morphed into a sense of entitlement. Even her backstory is contradictory. Were her parents strict and demanding or weak and confused? Therefore anyone who attempts to interpret the series seriously must do something to retcon Mai, if only to tone down her "sullen, bored teenager" act (eg, TomTom).