Best of all, it's TINY. VERY light weight (less than 10 ounces, loaded), very thin, and easy to carry in a purse or pocket. And very affordable, too... Go to the Kel Tec Owner's Group for some good posts and honest feedback about the firearm, its ability, and its reliability.
A small gun carried is infinitely better than a big gun left at home...
Kel-Tec is a good suggestion for small and light.