Had you guys physically walked through a version of this house or was the layout picked on paper? It's possible that whatever she pictured in her head is not what you ended up with. I can tell you from experience as a real estate agent, most people cannot fully visualize a house until it is done. Meaning, if the first time she walked through it with all the sheetrock up was the time she pronounced she hated it, then that could be the problem. If she had been through it with mist of the Sheetrock & fixtures in already, without saying she had a problem with it, then for sure, the problem is not with the house, but with the decision process or something unrelated and more about the marriage.

You have a couple tasks ahead: find out the problem definitively and get her to see reason on living there until you can get your money out of it.