Understood Betsy

"WHEN THIS STORY begins, Elizabeth Ann, who is the heroine of it, was a little girl of nine, who lived with her Great-aunt Harriet in a medium-sized city in a medium-sized State in the middle of this country; and that's all you need to know about the place, for it's not the important thing in the story; and anyhow you know all about it because it was probably very much like the place you live in yourself."