Mirrors of Cacedera (The Chronicles of Cacedera Book 1) by Nicole Stacy

Ambrosia "Amy" Meek was a quiet bookworm. She preferred to live in her life in the fantasy fiction section of libraries. A solitary life suited her just fine. Even her dreams are fantastical - like the one where she was dropped into a world not unlike her favorite books. It was a dream that haunted her for four years.

Until it wasn't a dream. Until it happened, apparently, for the second time. She becomes thrust into a world full of intrigue and danger. A world where the boy who had been haunting her dreams for years, is real, and a man now.