some people might be thinking after watching the final "What happened to zukos mother???"
I think zukos mother is dead because of acouple of reasons:
1. in one episode (i belive it was "The day of black sun") zuko asked wheres his mother and if shes alive. Ozai said "She may or may not"
2. Azula knew she was dead, In the episode "Zuko alone" zuko said as a child wheres his mother. azula acted like Ozai. She knew she was dead. And when azula took zuko's sword a few seconds later zuko says "Give me my sword back" and azula said "Who are you gonan tell, mom?" and she made a evil smile
3. Azula saw her mothers reflection in the mirror. But the mother wasent in the room at all
4. For the last time Zuko asked wheres her mother too ozai when ozai was in prision. IF her mother was alive, zuko would have looked for her.
theres alot of other stuff too,