The sword of Juliet

What if Juliet ends up surviving and, instead of ending her life like in the play, she runs away alone, as Romeo is dead, and she passes out in the woods outside Verona, only to end up in a modern-day fantasy world ruled by Queen Mab? She has no memory of how she got there, and she has no idea how to get back. She must venture across the land and go to Queen Mab if she wishes to go home.
The only issue Julliet has caught herself in the begining of a trial held every two decades. Now Julliet must fight to earn her way home. But is home truely where she belongs?