AD, a big warm WELCOME! (my third welcoming a new member today!!! - yipeeeee, keep it up peoples )
I feel for you and the tough place you are in!
There is a poster here (Mad Sweeney), who had used the family study night to study the Bible and only the Bible and it had helped his wife see the light. This is only a paraphrased account (Mad, I hope you don't mind), but anything could trigger the reasoning in your wife's head...Or so we hope!
I second the suggestion of reading Steve Hassan's "Combatting Mind Control"
Wish you the best, hang in there and hopefully you will be posting better news soon!
-Yan