Start her out on 700-800 fps lead Wadcutters....Almost like shooting a .22 pop gun. If you reload you can customize loads for her. Once she gets used to the noise and recoil, let her decide what she likes to shoot for carry loads.

I use 850 fps lead Wadcutter or lead semi-Wadcutter in all my short guns. They make very good up close and personal medicine for bad guys, and aren't at all hard recoiling for most people.

If you can, persuade her to use ear plugs and ear muffs. It's been my experience that the noise has a lot to do with the perceived recoil. Make sure you encourage her and keep her involved and before you know it, she will give you a run for your money!!