I think that this story has a couple of themes. For one Everything's not what it seems.
You can't always trust people. Always take a second look. I think that the author is trying to tell us that if you have a job to do, do it and stay on task. as you can see when she gets off task everything goes wrong and she runs into the wolf. If she would have did what she was told then none of that would have happend. So I would say the main theme is to not trust strangers.

