Might want to look at a Ruger LC9, it is a single stack 9mm with a thumb safety. The mag's come with a finger extension if you want to get a full grip on it. With the flush fitting mag you will need to curl a pinky under it when griping it. They are a little stout when firing them, but not uncomfrotable (you will just feel the recoil a litte more than say a Glock). I have one and its a great little CC gun. Very inexpensive. (I paid under $400 for mine)
Ruger® LC9™ Centerfire Pistol Models
Ruger® LC9™ Centerfire Pistol Models