I finally got my wife to go shooting with me last month

, and to no surprise, she LOVED it and now wants her own gun. So I'm looking for some advice/suggestions in this category.
The use of the gun will be for bedside protection and recreation shooting. (There's no way I'll get her to start carrying…not yet, anyway)The only gun I had with us at the range was my XD 45, and she said that was way too much kick for her. She's a small girl so we need something that doesn't kick TOO much for her, because then all shots after the first will be way off. But being that this will be her home defense weapon, I don’t want to drop her all the way down to a .380. So I’m thinking a 9 mm is her best option. (I thought about a .40 cal, but most 40’s I’ve shot have just as much kick as my XD 45).
So….any suggestions for a good 9mm with minimal kick for the lady?
Oh also, I have to add this in there....the slide needs to be fairly light too. Again, small girl.