jgnat has a point, CYP, that the disbelief in the Trinity will be a huge factor in making your wife feel uncomfortable in most Christian churches.
I found a local church which was fairly comfortable for me while making my exit (yes, I attended while I was still also attending the KH) because I spoke to the pastor about my background. I had a personal problem with the Trinity doctrine, which dated to my Lutheran confirmation class, pre-dub days. He pretty much astounded me by making the following observations: That at least HALF of his congregation didn't believe all of what he preached on any given Sunday. That one ELDER in the church was also a Trinity-doctrine disbeliever. And that I was WELCOME as long as I didn't try to proselytize. Would your wife feel comfortable in such a place?
I attended Adult Sunday School classes for a while and they conformed pretty much to the Bible as taught by the JWs. Just not all the extra, made-up "new light" garbage. I also attended an evening Women's Bible Study conducted by -- gasp! -- a WOMAN!!!!! (A mature woman. ) I very much enjoyed being taught with a feminine perspective in a less formal setting.
The church was listed under "Non-Denominational" in the Yellow Pages. I wound up leaving, because for me, Christianity's God was still too narrowly interpreted. I believe that's true in any Church. But I did have an epiphany in that church one Sunday -- I understood, deep within, that it was OK to pray to Jesus and that it didn't matter one way or other what one's concept of God was.
There's a quote I found which I very much like:
What sort of God would that be who has only one way in which He can be served!- Yaakov Yitzhak, quoted by Buber, "Way of Man"
Sums up my current viewpoint pretty well.
I wish you success with your wife's eventual deprogramming.
outnfree