ThatGuyWithSouvlaki
Lucky Laki Malakis
Happy to play her as a woman, maybe have her as a princess and the entire fact that she is the Avatar is considered a negative by her family. They even try to hide it because they did want to attract the attention of the fire nation and needed her for political reason i.e. marriage. Her water bending master, maybe a white lotus member, notices who she is and tries to help her as best he can. Embolden by his help she rejects the marriage and the scorned lover collaborates with the fire nation to get at the tribe and her in return to be made ruler. Where this goes writes itself.