MY but you have just opened a huge can of worms here. How much shooting has she done? Is she recoil shy? If she is a shooter what caliber is her fav.? and a bunch of others come to mind.
While the Kel Tec P-11 is a good SD/CCW pistol it is heavy on the recoil and many find it bites the hand, it is not one you probably wish to practice with much.
You need to get her to a range let her shoot different pistoles and decide what is right for her. My daughter after a lot of shooting decided on a 3 inch model 36 and is doing fairly well with it.