Gone to Earth — Mary Webb

Although to outside eyes, her existence may seem beset by difficult circumstances, 18-year-old Hazel Woodus loves her idyllic life in the gorgeous Shropshire countryside, where she spends most of her time communing with the forest and woodland creatures. But when a clash with her eccentric father causes unbearable tension in the household, Hazel decides it's time to make her own way in the world.