Hi Marriedtoajw
I know of no one who has delt with being with being married to a JW as long as I have withoug getting sucked in.
My brother was; his wife was "studying" when they married and is still totally in. Their marriage didn't survive - jws don't compromise - but both children avoided baptism and are "out". They always had his worldview as an alternative.
Hopefully you have read the Cameron books. In any case, the way to win your children is to maintain the moral high ground. Be calm and respectful or everyone's beliefs, but . . ask questions. And ask difficult questions of your wife when the children are there.
I'd guess she'll try all the typical jw tactics - changing the subject, answering something else, demanding the source of your information and dissing it. Never give her an "apostate" source or link to work with; use the dissinformation in the literature itself, or articles such as Candace Conti in the media.
End with "I'd like to believe, but in all conscience, unless . . . . is cleared up, it's not possible".
Do your children attend school? The evidence for evolution, and against a worldwide flood, is overwhelming.
Finally, it seems you are feeling powerless - truly, you are not. Counselling might help here; it worked for me!
Hope this helps, Retro