What book is this?

Okay, so I’m going out on a limb here. I was at the bookstore a few weeks ago and was looking at a book I was interested in buying. I was going to look the book up online to learn a bit more about it but I can’t remember the name or author. All I know was that it was fiction, seemed to be of the southern gothic style, took place in Florida, was by a new female author, and the title had something to do with alligators and orphanages or something. From what I remember the book was about a little girl who was an orphan and had to live with the her uncle in the swamplands of Florida. Anyone have any suggestions?