Magic in the Mind (Artemis Fowl fan fiction)

Katy Jones was never an ordinary teen. Especially after she unlocks doors to her mind that hadn't been open for centuries, in any being whatsoever. When Artemis Fowl the Second and Butler are warned about this, they are send with former captain of the LEP, Holly short. But is this magic something not just dangerous to Haven, but to anyone who wishes to use it?