Usually i would have felt bad that i upset my wife. I would have said 'sorry' or something to that effect. I did NOT do it this time. I knew that my request was not irrational.
I think you were very wise in doing that. The fact that she thought you would hand it over without question only shows the type of R the two of you had in the M. That R is over and you will not interact the same way with her. You have to protect yourself...including financially.
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!