My wife attended a Lutheran church for awhile...that ended after a few months. The last straw, so to speak, was the probably-lesbian pastor they brought in.
Let me assure you there are Lutherans and then there are Lutherans. Your wife must have gone to an ELCA church. There is a world of difference betweeen the ELCA and the Lutheran Church Missouri Synod, which we attend. She needs to look for an LCMS church. Ours is very strictly Bible based and we love it.