What is the name of this book?

I've been looking for this book for a long time. I read it some years ago when I was in grade school. It's a children's or teen's book and it's sort of a western. I can give a lot of details, but none that let me find it by googling it. The main character was a girl who owns some sort of bed-and-breakfast. A shady guy shows up and stays at the bed-and-breakfast, which freaks her out. His name is Morgan and she eventually learns that he is actually a good guy and is trying to stop some men from doing something bad in her town. He's also an orphan who wants to help other orphan children out, and in the end, I think they turn the bed-and-breakfast into an orphanage. Can anyone help me?