Wednesday Wilson Fixes All Your Problems

The second title in the series about everyone's favorite young entrepreneur, Wednesday Wilson!
Sometimes the best business ideas pop up when you least expect them. Or that's what happens to Wednesday Wilson, anyway, the morning her brother, Mister, locks himself in the bathroom because he's nervous about a school presentation. When classmate Emmet convinces Mister that a worry stone will calm his nerves, Wednesday offers her marble --- with the promise that a Worry Marble will fix all his problems! But then Wednesday starts thinking about how many things kids get nervous about. And, hmm. She has a whole collection of marbles.
Has Wednesday hit entrepreneurial gold? Or maybe her brilliant new idea doesn't make cents.