13 Treasures

In the book, there are mischievous fairies. The main character can see the fairies, but nobody believes he that fairies are real. So she gets sent to her grandmother's manor so that her mom can "take a break", but at the manor strange things are happening and old secrets are recovered... most of them related to fairies! This book is book 1 in the 13 treasures trilogy. The series is really good so far, and the 3 books are 13 Treasures, 13 Curses, and 13 Secrets.