I thought I would help out a little here for you. First I just have to say I’m against the conceal carry thing, but if you are gonna do it you may as well do it right.
1. First there is no way she can own an automatic hand gun. She would need to have a class III license. So that narrows it down to semi-auto and revolver. I would have to say semi-auto, usually more rounds and easier loading. You say that you don’t want a 9mm because it lacks stoping power….that is a myth. It does just fine, especially using it for personal protection.
If your wife is looking for a gun I would recommend a GLOCK. If you look at the website it has the specs on the guns. I would personally recommend a Glock 27 (.40 cal w/ 9 round capacity) or a Glock 30 (.45 cal w/ 9 round capacity) These guns are small and fit well in a person’s hand, especially a smaller hand. The two guns I mentioned are great and have excellent stopping power. Infact I have a couple of coworkers that carry the Glock 27. Glock is also very reliable, meaning no jams or malfunctions. They also have no safety other than a trigger one and once you put your finger on the trigger you just pull.
The other gun I really like is the Springfield Armory’s XD9892. Check these out and see what you think.
2. As far as renting or seeing how they work I’d have to say follow Jon’s suggestion. Or is you go to a gun dealer they may have some ideas as where to go.
3. Pro’s and con’s
semi-auto pros: easy trigger pull, higher capacity, rate of fire, ease of loading and unloading, less felt recoil
cons: possibility of malfuncions and jams, more parts and pieces.
Revolver pros: no safety(on most), smooth trigger pulls, better accuracy
cons: limited capacity, more felt recoil, awkward to load and reload
Well good luck and hope my blabing helps.