I really like what Qcmbr said and I've been given up trying to show my wife the flaws in her thinking head on. We use to debate the Bible and the doctrines. I've told her about the false dates and even the whole 607 vs. 587 thing.
I'm now just trying to appeal more to her authentic personality while trying to keep her cult personality from coming out. Read Steve Hassan's books.
Honestly, I was more successful with her breaking free from the WT in the past when I did not think it a big deal than I am now. If I had known what I know about the WT then and how to combat the cult mind control, she may have fully came out. Now she is fully in, but I still hold out hope.