I agree that purse carry is a bad idea. A firearms instructor asked a woman friend of mine the crucial question: "Will your purse be in your hand or slung on your shoulder all the time?" I'd worry about her even carrying in a conventional fanny pack. A thief could cut the strap and be gone in a flash, like a purse snatcher, and get a nice gun out of the deal.
The Uncle Mike's pocket holster works very well for ridiculously little money and can be carried in pants or jacket pockets. It covers the trigger and is good at keeping crap out of the action (a problem that makes me glad I carry a concealed-hammer snubby). If the gun is in a pocket, it should be the only thing in that pocket.
I'm not a woman and have never tried a belly band holster, but I gather it works well for many women. Whatever she chooses, I believe very firmly that the gun should be on her person all the time.