She kept defending the org claiming that it's "not perfect, but closer than any other religion" so there's that, ... but, at least she's listening.
How many religions has she actually studied? Or is her knowledge of other religions based on what she's read in the Societies Literature?
A lot of people have misconceptions about what Jehovah's Witnesses believe because they only know what they've heard.
Ask your wife if it would be wise for a person to buy a car from a Ford Dealership who presented her with one sided or negative information about Chevrolet's and other makes of cars and warned/threatened her against verifying the information by checking it directly with the other manufacturers. Most Jehovah's Witnesses only know about other religions via Jehovah's Witness filters and their minds are closed. Worse yet, they've never checked into the Blood Issue via outside sources yet are ready to die to uphold it.