I should read the details first, but at a glance, I would say that I probably side with your W. It is usually tradional, I guess, to think of that particular activity as a mother-daughter fun thing. She feels like you are treading in her waters. Has your W taken her to do her nails in the past? Have you ever taken your D before? Are you trying to do these things to get back at your W? If I were your W, I'd probably think you were being a jerk. Sorry, but I personally think you should find something else to do with your D. It's just one of those things that's kind of hard to explain, but I'm sure there are things you kind of want to be just for you and your son.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
