I saw this movie the other day.
Maybe "Last Kind Words"?
17-year-old Eli has just moved with his family deep into the backwoods of Kentucky to work on the isolated farm of a local recluse. Inexplicably drawn into the strange forest that lies beyond the farm, Eli encounters the beautiful, sweet and mysterious Amanda, seemingly the perfect girl. But with the discovery of decaying bodies hanging from the trees, he realizes that the forest - and Amanda - are harboring some very dark secrets. Suddenly, Eli is living in a waking nightmare where the lines between life and death are scrawled in blood, and there is no escaping the terror from beyond the grave.