What I liked about the book:
I'd read the other Marie -Grace books and the American Girl mysteries, so I really enjoyed reading this one. I also liked that it taught about steamboats and the 1850's. I found especial pleasure in reading about the characters and how Marie-Grace interacted with them as she is different from some of the other American Girls.
What I didn't like about the book:
It was rather short, being a voracious reader I devoured it in less than an hour, but for someone slightly younger- maybe 9 or 10- I'd say it would be perfect. I also found that I could guess the plot by the time I was halfway finished.