Everyone who downloads Feral Heart has a FH folder. There is no download that doesn't include that.
One way to try to find your FH folder is to press start on your computer, and search. You will see a little box and or a folder might pop up that shows you a little dog on the side. When looking for your Feral Heart folder, you need to look in your Local (C:) drive, where most of your files are basically. Then it will show you options and your Feral Heart should be one of them.
Good luck floof