120 pages into Impossible by Nancy Werlin

I picked Impossible of this year's list of Teen Top Ten nominations. The book took a darker turn than I was anticipating, but Werlin is handling the difficult subject matter nicely.  I'm not a huge fan of sci-fi or fantasy, so the supernatural elements of this book are tricky for me, but I'm very curious to see the complete puzzle put together.  The main character and her neighbor/friend/maybe boyfriend are incredibly likable characters and that's making it more enjoyable for me.