Under the Mountain (Monsters in the Green Mountains, Band 3)

It's Gracelyn Edwards' last summer at home. Being legally blind doesn't keep her from running a popular "monster blog" or being an avid adventurer. Determined to capture footage of an elusive monster living deep in the Vermont wilderness, Gracelyn, and her father embark on a once-in-a-lifetime adventure.
Years later, her family in tatters, Gracelyn visits the woods again. This time for revenge. Can the monster-and the secrets Gracelyn has uncovered-be destroyed before it's too late?