What's a DA?
Just curious...I'm not a JW.
But it's not likely that you're going to be able to talk your wife into leaving her religion, and unless you have something better to replace it with you may find that doing so will hurt your relationship with her. If she's happy where she is, and if she finds fulfillment with the JWs, pulling the rug out from under her may have a number of unexpected consequences you may wish to discuss with a therapist.
When I was in high school back in the early 70s, I had a philosophy teacher who loved destroying the faith of his evangelical students. He was an older fellow and had all sorts of experience that my class mates didn't. He succeeded in destroying the faith of several, one who committed suicide and one who married him (I kid you not). She was 18 when she married him, as her parents were opposed to her marrying this 56-year old guy who looked like Jabba-the-Hutt with a beard. He quoted Albert Camus all the time without knowing that Camus had renounced his atheism at the time of his death and was considering joining the Catholic church when he was killed in an automobile accident. The bottom line was that he was a predator. I'm not saying you're like that, but you need to find out the repurcussions of destroying someone's faith before you actually do it.
Strange as it may seem, some of these people are happy. When you change their most deep-seated beliefs, you change their attitudes and life styles. She may change more than you want her to and you may find that she may slip into depression and have other problems, including a resentment and hatred of you.
Just something to consider. Perhaps someone can add to this and give you suggestions.