Antilia: Sword and Song by Kate Story

The paths of two lonely teens converge, caught in an uncontrollable current crashing through time and space... In Antilia, there is magic, and human beings walk alongside minor gods and mythological beings. But all is not what it seems, and the two are pulled inexorably into a diveded realm. Separated and unable to get home, they find that Antilia's fate and Earth's are forged together. Can Ophelia and Rowan repair the damage, fulfill their destinies, and save both worlds from annihilation? Antilia: Sword and Song is an epic story of survival and self-discovery"

This is the first in the the Antilia duology. 

Kate Story is a Shakespeare geek and science fiction fan. A Newfoundlander living in Ontario, she is a writer and performer. Her first novel Blasted  (Killick Press) received the Sunburst Award's honourable mention, and she is the 2015 recipient of the Ontario Art's Foundation's K.M. Hunter Award for her work in theatre.