Do I have to pay for medical benefits for my spouse?

My wife and I have been married for 13 years. Recently we have been having marital issues. My wife took more than half our savings and deposits her paycheck into an account with only her name on it. She has left me paying all of the bills including a mortgage which she is 1/2 owner. She is contributing nothing although I have asked her repeatedly to help out with the shared expenses ( gas, electric, etc). I feel she should contribute something since she lives there. I find this extremely unfair as she is able to save all her money in an account without me. In addition I pay her medical benefits through payroll deduction. I am able to afford all the bills but from my salary, so it come down to principal and what is fair and right. So my question is can I drop her off my medical benefits plan?