The Guardians — A.J. Smith

Last summer, Jelly Jones discovered the reason why her sense of direction is better -- than everyone else on Earth. Not to mention her uncanny ability to heal faster than the average human. While being the Keeper of the Key certainly has its advantages, there is one major downfall -- the prospect of spending her life running from Einar, the only one who can access the true powers of the Key. However, according to Sybil, the running will not begin for another couple decades. Or so she thought.
This summer, on the approaching possibility of a supervised trip to Jomiadore, things go wrong and even more secrets are revealed. Just as Jelly begins to believe it will be a long time before seeing the other world once again, her parents are kidnapped through a vanishing door and she must decide whether or not to make the journey to the one place on Jomiadore the Key should never go.