I read this book in middle school between 1998-2000 and checked the book out from my school library. It was probably published in the late 80’s or 90’s. It was from the fantasy genre and included a magical land that the young female main character found by following a trail that brought her to a waterfall with a hidden entrance. Once she was in the magical land, there was some kind of dangerous landmark that lured people by emitting a pleasant scent that specifically appealed to each individual. For the main character I think it was a warm scent like cinnamon/honey/nuts/vanilla. I think this book may have also featured a relationship between the main character and her grandmother. Please help!