My wife has mixed feelings about guns, won't touch them, doesn't want to see them, but wants me to be ready when issues come up. I can still get one in under ten seconds, but I have to accommodate her wishes too. Her views changed a lot last year, but not as much as I would like.
Get her to the range and get her a gun she feels comfortable with. Mr. GG2 carries an XDM I can’t even fit my hands around. I carry a Keltec PMR 30 .22mag. It does not have the knock down but then there is the 30 round magazine. :-) I can handle it proficiently.