Despite her swearing an oath before god and country to 'love and obey'?
In the west it's part of the marriage contract, if she doesn't like the contract, she shouldn't sign it.
If you hire a car and it won't start, do you still pay the rental?
If you sign an employment contract and the employer decides not to pay you, do you still go to work?
Marriage in the west is all one sided, the man is expected to fulfil his part of the contract, she has no requirement to do anything.