A gun in a purse is a bad idea. The purse is the first thing that a crook is going to grab, and now he has: your wifes ID with your address, your house/car keys, and a loaded gun. Not to mention credit cards, cash, cell phone, etc. Look at some IWB holsters.
it's the only way I can get her to agree to carry
My wife's first holster purse was a Galco. It was a good product, and she still has it.Galco