You’re very welcome! I love resources like this one, and I love to let others know about the ones I know of. I hope it will be helpful to you, too!
I think it would be great with any age! It will most likely need to be adapted for use with really young ones, maybe by only giving them some of the chores on the lists to do, and working alongside them which I plan on doing in some areas. If your daughters enjoy helping you they will most certainly love it and benefit from this.
I think that for the most part, the book has helped to give her even more desire for keeping the home and to translate and encourage my vision for our home. It has given me the step by step process in a very easy way to implement it with her. The instructions are even beneficial to me. 🙂