Sorcerer in the Mirror - Twinborn Chronicles, #2

Loyalty is a bond that spans worlds. Deceit among twinborn is doubly deadly. Soria Coinblade has a simple task in mind: to find the twin of the lover she has been denied in the other world. What she finds instead is a path beset by pirates and mercenaries. Trained in the mystical arts of two worlds, she won't back down from any challenge. But her troubles don't end when she finally chases down the love of her life.
The two of them embark on a new quest with implications for the world they both call their second home. Kyrus is stranded on a sparsely populated island. When he tries to use magic to find his way back home, he commits the gravest error in the history of magic. With the balance of power upset in two worlds, will Kyrus have caused an empire's downfall, or become its savior? Sorcerer in the Mirror is the second book of Twinborn Chronicles: Awakening.
For fans of epic fantasy two aren't looking to start another unfinished series, the Twinborn Chronicles provides multiple new worlds to explore and all the closure you've long been denied.