My husband took his DAT a month after our marriage, we spent 5 days for honey moon, and the rest of the days i left him a lone to study. I tried to take care of him by cooking his favorite dishes and providing the right study environment. It was difficult because we were just newly married and i had so much in mind to do. But i will never be an obstacle in his way of success.
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Now this year it is my turn to study and he is doing the same thing to me, (except the cooking part!)
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My point here is not to show off or anything, but seriously, if she loves you she will let you study without complaining. You should give her at least couple of hours a week to hang out. That will not hurt you.
Good luck