I consider myself fortunate in that my wife won't let me go to the range without her now, and we really only started going to the range about a year ago. I had inherited a G19 when my father passed and kept mentioning that I wanted to take it to the range, but since she had never been to one she wanted to go with me just to see what it was like. That one trip is all it took. She wouldn't let anyone else teach her so I took it SLOW and with ZERO pressure, as I wanted every trip to be 100% fun (I figured I would get her "blessing" to go more often that way, too!).
Also, at least until SHE says she's ready, don't attempt to have her shoot anything other than a .22 to start off with. Kathy was hesitant to shoot a 9mm, so we started at .22 and then worked up to .380 (a little Bersa Thunder I believe). By that time, I told her that due to the .380's smaller size, it actually had more muzzle flip than the GLOCK 19, so she finally gave it a try and loved it. She now has her own Walther P99-QA 9mm (among others) and gives my Colt 1911 .45 a lustful eye everytime she shoots it. Although I don't have a .44 Mag. anymore (though it shouldn't be too much longer before I can rectify that), she'll probably like it, too!
Seriously though, I think the both of you are definately on the right track. My wife doesn't like to hunt, but she loves to target shoot and has become a pretty darn good shot for someone that basically just started less than a year ago. Although I hope to never see the day when she might have to use a gun in self-defence, at least now we both feel more comfortable knowing she knows how to use it, and will if she has to. And, we're getting better all the time!
