This thread is about operational security at one's home, and more specifically, what to do when your wife is home alone and she will not embrace firearms. From the data I have seen, 23% of women own firearms and 77% do not. 54% of males do not own fire arms and 46% do.
Most households do not have a firearm, 47% yes and 53% no firearm.
So most married men and women for that matter, will not have a spouse who wants to use firearms. The best advice here, in my opinion was dogs, alarms, hardened barriers, not answering the door, etc. The issue of how do I get my wife to brandish firearms when she is not willing to do so is axiomatic. Even if you could somehow pressure the person to do so it would be unsafe.