Welcome to the board!
I love my wife but she will leave because she has to stay faithful to Jah's earthly organization.
If you posed the question: "What if you found out beyond a shadow of a doubt that being faithful to Jah does not mean alligence to any earthly organization - how important would it be for you to find that out?". Then quote to her from the JWs about proving the truth of your religion so that she doesn't get unconfortable in her 'quest'.
just a thought.... again... WELCOME!