Death by Lightning (OC x Zuko) book 3
Madelyn has had her whole world thrown out of balance. The Fire Nation has taken Ba Sing Se, the Avatar is thought to be dead, and the lost prince of the Fire Nation has returned to his rightful place. On a more personal level, she remembers everything from her past in the Avatar world, her brother lays dying and no one can help him but himself, and she has been betrayed by the love of her life.
The one thing on her mind is revenge. Taking out her anger on the one who hurt Aang and the one who broke her heart. But the only thing she can do now, is wait
This is the final book in this trilogy. I hope it is good enough
Sorry about the cover, it is the best I could find.