Practice different scenarios. For example:
Take a rubber (toy) knife, a pair of Airsoft pistols that approximate the actual carry guns you each prefer, and the help of a good friend.
Have her prep her Airsoft the way she carries, and you prep yours the way you carry. Give your friend the rubber knife (and good eye protection), and you and your wife sit in the car, as if you had just arrived "wherever" and were about to get out.
See how each of you meet the "threat" when your friend pops out of nowhere & yanks the car door open.....
Note - if you do this at home, you may want to practice this inside using chairs to simulate the front seat of the car, in case of neighbors who may dial 911 or even pull out their own shotguns if they think the "attack" is real.
You could also try timing her at the range... use a stopwatch to see how long it takes her to bring a hot pistol on target from her pistol case and get a shot off. Have her time you, as well.
