My sympathies are somewhat divided here. The man had to know that his wife harbored significant objections to having a firearm in the house. Going out and sneaking one into the house was wrong. He should have told her he was going to get one - and then invited her along to a safety and training class.
As a husband, I respect my wife enough to try to not do something that would be truly offensive to her. And she is the same with me. It has to be a two way street.
Bottom line... He should not have snuck it in.
The Dear Abby columnist struck me as being condescending toward gun ownership - like we are weak and vulnerable and need coddling if we want to own and carry a gun. I was also rather irked by her assumption/assertion that gun ownership was going to attract burglars who would steal them and use them for nefarious ends. She had some sound advice, but much of the message was lost in the tone of the transmission.