Big Irish: I'm sure you are welcome here, and that solution is understandable and would be tempting (I will admit it). Here is a different perspective, and partly because the guy's wife did indicate some mellowing of her attitude. He could possibly risk a steady, good relationship with his child as he/she grows up.
It appears very likely that it could blow any more future progress that she makes, and make home defense very difficult with guns which 'don't exist'. She recently said that he could have bought a gun at the show(!). Don't get me wrong.
Here is a personal example of my deception:
My wife is very level-headed -for a female- and indifferent about guns (her late Dad was a 30-year Quartermaster, i.e. vol. to go with the 101st to Normandy, Arnhem, Bastogne siege, Haguenau, Goering's Haus). The goal is to limit monthly expenses.
The point: I had two cases of Wolf or surplus Bulg. ammo shipped -via cashier's check (no record)- to friends' houses. She suspected such and did not mind. Unlike the OP's wife, mine primarily doesn't want to Hear more than a small bit about guns and ammo...she drops her head like she is drugged for a colonostopy.