As for mine, she is still afraid of guns but slowly breaking down and willing to come with me on a range trip some day. Ill keep working on her but I digress....
I didn't read the whole thread, so I apologize if this has been said already. Your problem is that you keep working on her. My wife was the same way. I "worked" on her for three years before I basically gave up. Nothing I said would convince her. Then, earlier this year, March I think, I saw a flyer for a woman's beginner's handgun class. I talked to one of her friends who liked shooting and asked her if she'd be interested in doing that class with my wife. She said she was, so I asked her to invite my wife. And that, as they say, is that. She had a blast. She was still a bit apprehensive about guns after that, but she was more willing to go and shoot.
Today, she has her handgun (Sig SP2022) and her CCW permit. I discovered that a lot of time, a woman's apprehension about shooting is that it's some kind of boys club. If you can get her to go to a course for women by women, she might be more open to it. If you have to, make her a deal. Tell her if she goes to that class, you'll do something that she's been wanting, or something like that.
Essentially, quit working on her, and find something that might appeal to her. This article does a good job explaining it.
And here's another one that explains why all women classes might be better for a woman than a co-ed class:
Oh, and one of my favorite articles by the same author (I wish I had read this before my wife got into shooting):