Welcome. It sounds like your wife is making good progress. Be patient, it takes some people longer than others. You wouldn't want her to do it for you, only because she knows beyond a doubt this religion isn't what it claims to be.
You might ask her what she would think of any religion that wrongly predicted the end of the world multiple times, obviously being wrong every single time. The Watchtower predicted the end in 1897, 1914, 1925, 1975, a 100% failure rate, how could that be from God? Why would God use organization that presumed to know what the end time was when the bible plainly said NO man knows the day or the hour. Food for thought.