If it were me, I would come across as wanting to spiritually grow, and to tell her that I want us both to learn together, and truly understand everything we're being taught so we get grow closer to Jehovah together.. That would mean there would be no mental barriers go up and it would promote free thinking. Then approach a single subject at a time and in real depth. As you go through each one and realize this stuff just makes no sense or is based on lies or false evidence, hopefully it would just put too many doubts in their mind so that it cannot possibly the truth. No apostate material, just the Bible, WT material and the sources they site. Grab hard copies of the books they misquote with the 'innocent' intention of research and be shocked when it doesn't match up.. hopefully you can fake an awakening while they really wake up.
Just some suggestions. I had a similar approach when waking up my JW partner.