DC are generally good to rally the troops for a day or two and then all is forgotten. If she's not a psycho dub, DC won't have any lasting effect on her. You may consider really studying with her for wt study and/or have a real family study night. When you see noo lite or misquotes brings these out, get old publications and say something as "Dear did you notice this noo lite, only so and so years ago we were taught this, isn't this wonderful?" Or, "I looked up the society's quote here and for some reason the author wasn't saying or agreeing with what wts' context, I wonder why they quoted him in this article in the first place." Get her to think, reason and talk about subjects.
Or simply point out faults which may shake the family boat and see the reaction from the wife and move foreword accordingly. All the best in getting her out, but you also have to realize many have tried and never got their spouses out, so be prepared for that also.