Welcome! My wife has tried all calibers and models but she settled on Springfields XDs 3.3 9mm. Fiber optic sights, grip safety, and loaded chamber indicator. Try different ones until you are comfortable with the one you shoot best. Good luck and welcome to the ODT!
^^^^My wife did the same and settled on a Springfield XDs but then she shot the Walther PPS in 9. New gun in the house! the avatar is of her first two mags.