"Wives, submit yourselves unto your own husbands, as unto the Lord.
For the husband is the head of the wife, even as Christ is the head of the church: and he is the saviour of the body."--Ephesians 5:22-23
But the Bible also says you can have slaves and you are to kill homosexuals. It says if your kids talk back to you, you are to kill them. If your wife wasn't a virgin on her wedding night, you are to kill her on her father's doorstep.
Obviously, one shouldn't always go by the Bible's "morality". In this case, though, I see no problem in disagreeing with your wife on the issue. BUT I wouldn't approach it in that way. Using her religion to attack her will not solve the problem. It will only hurt your relationship.
Edit: [joke]If you are planning on actually attacking your wife, I sugges using a baseball bat or a sharpened ferret.[/joke]