Sweetly by Jackson Pierce

Ansel and Gretchen have had a less than easy life. After the disappearance of Gretchen's twin sister, they had to watch their parents slowly die. They had to live with the guilt of losing their sister, and of knowing about the witch who took her. They finally get away only to end up in a small dead end town. They find residence with Sofia Kelly, the town's chocolatier. But as nice as Sofia is, they know she is harboring a lot of secrets. Secrets that will help them discover what really happened to their sister all those years ago.

I love twists on fairy tales and this was great. Hansel and Gretel has so many interpretations, but this was one I had never heard before. An easy, quick read, but very good.