Fantasy
Traveling back to the fairy realm wasn't on Olive's to-do list, but the fate of both Earth and Fairy depends on her ability to stop the Dreamthief. To complicate matters, she may be losing her heart to someone who can't love her in return. Saving the world, no problem. Falling in love, not so much.
The Dresden Files by Jim Butcher;
The Kate Daniels Series by Ilona Andrews.
