Then threaten to leave her, and see if it brings her up sharpish. The thing is, abnormal spending sprees (when you haven't the money to do it) can be a sign of something else, such as depression. All the women I know love to spend, but stick to a reasonable budget. If your wife's is out of hand, you need to sit down with her and work out your finances on paper. If the black and white truth doesn't make her see what's happening, I think you need to remove the temptation, by taking overall charge of your finances, and cutting up any credit cards. Perhaps a word with the bank might help?