"Piecing, the piece of cake way" is so simple I get it. If I get it, a 9 year will have a breeze. I bet she's one of those kids who can look at any remote and automatically can program with it.
Also you might want to check their local LQS shop. My shop here is Richmond does learning to sew birthday parties for kids and beginner sewing lessons. I took a beginner sewing lesson and a how to operate a sewing machine at my LQS 2 years ago and there were children in the classes.