My liberal Mom has determined that she needs a handgun in case she has to defend herself in her home. A person with a history of mental illness and a propensity for violent behavior has been menacing her & her neighbors the last few nights, and she can't believe that the police won't do anything about it. I am going to teach her some basic shooting safety & defensive pistol techniques. Mom is 60 & kind of frail, so I am thinking a small revolver in a light caliber, however, I don't want to rule out autos if there are some that are less prone to jamming when used by someone with a limp wrist. Suggestions for caliber & platform will be greatly appreciated!