I was the type to always go at anything 110%. But a few years ago, my body started shutting down. After tests were ran, my doctor told me that I was not producing adrenal hormones. Don't know if that happens with everyone who pushes over their limits for a long time, but I kind of think that it will catch up with her. Nothing you can do about that.
My H was nothing like me and I accepted that fact and just did my own thing with projects, etc. I didn't have the life your W has, but I knew my H wasn't going to even try to keep up with me.
I think you have to be the reasonable and stable factor for your children's sake. You can be fun in small situations. Your W may like the "drama", but you don't have to follow her. Be yourself.....just a better you.
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!