She absolutly has to pick her own gun, also stay away from the small light weight 9mms and 380s, they sting to much when shot, useing 380 as a minimum caliber, but 9mm would be a better choice, or a 38 revolver, the things she needs to pay perticular attebtion to is being able to rack the slide on the pistols, and trigger pull on both pistols and revolvers, also dont stay away from the 45 acp just because its a "45" some are very easy to use, and recoil is not what you might expect, go to a well stocked gun shop and look around, preferably they have a range and may rent guns, try anything that may apeal to you, if you see a pistol you like but have trouble racking it, ask the people there for tips to make it easyer