Pas, Just a short suggestion. Say to your wife, "i know you won't agree with this and you probably wiil think I'm making excuses, but this is one of the big reasons I didn't do anything different." And then tell her your explanation. In order for her to disagree with you- which she might be prone to do right now- she will have to agree with you. See what I mean.
But, if she argues with you, don't argue back. Just say, "I could see how you'd feel that way." Michele