Good stuff....Your wife was clear and concise. As you noted, this is what you asked for. At some points in your marriage you might have seen it as nagging, but in reality it is setting clear expectations of what needs to be done....with no assuming (I use the assume statement all the time).
I hope you were successful in explaining to S6 that their behavior was why you did not do the project. Give the kids responsibility for the consequences of their actions.....The girls it is harder to teach, but nobody said being a parent is easy. I will say though.....nothing has affected my kids behavior patterns more than letting them know when I am disappointed in them. Just a nugget of parenting advice to pass along.
I like how tough spot thinks about parenting...That is the experience of having children. I would read that post a bunch of times.....There is a lot there.