She has chosen one of the best all around handguns ever made, and one that has been vetted all over the globe time and time again. She likes the color.
Why not make her happy and get what SHE wants.
She will have an incredible firearm, and one that will be about impossible to wear out. She will be happy because SHE chose it, not her husband. If her husband chooses it, there will always be some resentment for the condescension (little lady doesn't know any better" type mentality. Women are not stupid. They know that they may not know firearms as well as men (in general) but sometimes you are doing a disservice by steering them away when they have found a handgun with a stellar track record. It is not about what the man wants.
And she sure as hell does not need a J Frame. Few guns will make a female hate shooting quicker than a J Frame snubby with its painful recoil and crappy sights. That is not a gun for a novice.
