Have you ever considered buying Josh McDowell's book "More Than A Carpenter", or even better Lee Strobel's "The Case for Christ"?
http://www.amazon.com/More-Than-Carp.../dp/0842345523
http://www.amazon.com/Case-Christ-Jo.../dp/0310209307
Perhaps these would open her eyes to some of her beloved "facts".
Brother I want you to know that I will be praying for the salvation of your wife. Also, have you ever fasted to get your prayers for her salvation answered? Fasting is a powerful weapon against the flesh, and God loves it when His children humble themselves in such a way to have their prayers answered, especially those for the salvation of their loved ones.
Keep your hopes up brother. Never give up on your wife, just like Christ never gave up on us. Love her, and cherish her. And Lord willing she'll come around.
Peace and Love,
Stephen