Hi Easyreader,
I've never been a JW, so I really cannot say I fully understand what you're going through. That would be pretty presumptuous on my part. But, I sure can empathize with you.
But anyway, I HAVE read many books on the subject to try to educate myself re the WTS. There have been many JW husbands who have gotten their JW wives OUT...as I'm sure you know. It seems like the best method would be to gently, ever-so-subtly, in casual conversations mention one thing about the WTS that just doesn't make sense to you. And then ask if it makes sense to her. Just pick ONE thing every month or so. Go very slowly. Then DROP IT. It doesn't matter if she doesn't answer your question. At the least, you'll be planting seeds of doubt in her mind about the Organization.
This was just a thought I had... to try and help. I don't know.....maybe you've already tried something like this.
I wish you all the best....
Lavendar