I agree with the lady
Your wife is making decisions. I would worry about her safety too. I am not sure if this will help but my wife was resistent to shooting clay birds. She did not mind watching but she wold have nothing to do with the shooting part. I asked her why and she never really answered my question.
Since I reload all different types of ammo I loaded some Tripple A' with a lower charge of powder and shot and she loved it. It was all about blast noise and recoil of full power loads. After that she got pretty good with a shotgun. Did the same with several handguns backing down from bone breaking loads. Just a thought. Maybe this will help