In My Dreams, You Are Smiling (фемслэш)

Azula’s battle with the Temple Spirit will just be the first of many in her lifetime.
A miscalculation during her most recent encounter with Ty Lee strands them both in a mysterious town where its inhabitants were seemingly stuck in a dream. Azula is then forced to confront her role in the War once more while Ty Lee gets to know the girl that Azula has grown up to be while on the run.
Meanwhile, malevolent spirits have some other plans and there might not be much time for either of them to talk things out.
or:
Post comic Azula redemption fic where she finds out her destiny might be related to the dark spirits that have increased in number during the Hundred Year War.
Formerly titled: Time Capsule