I don't know how your wife would respond, but neither did I when I bought my wife a Henry youth lever action .22 rifle.
I was pleased to find how much she liked it (she thought the stock was really pretty.)
Been shootin' ever since, and has had her CCW for over 4 years now.
Our favorite thing to do on our annivirsary is to go to the range and spend the day shooting.
Try it, and if she doesn't go for it, you got yourself another plinkin rifle!