She is manipulating you and the kids. Perhaps she has always done this and you allowed her to get by with it? People like your W continue to do it until it becomes a "way of life" and they reach a place they may not even realize how they are treating people. Perhpas she doesn't realize but then OTOH.....she may very well know what she's doing. (You know your W, so what do you think?) One thing is for sure, you can be she will continue as long as she's not called out about it. People who manipulate their families are bullies and they are self-centered.
If you feel like a doormat, that is probably b/c you are being stepped on a lot!
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!