Blurb (from Goodreads):
Ever since Samantha Winthrop's mother moved them to Lacuna Valley, supposedly in search of better weather, the list of strange questions she has no answers for has been growing out of control.
Does her little sister, Violet, have the ability to make things happen just by "praying" for them? Are Sam's dreams really predicting the future? Is she destined to marry the boy she just met, and what is the mysterious orb that he's guarding? Why does she get the impression that there are dangerous creatures watching from the woods?
While Sam should be focusing on answering those questions, there is one other that makes them seem almost irrelevant: Is her mother planning on killing her and Violet?