I strongly agree with the recommendations of a .38/.357 wheel gun. Avail in 5, 6, 7 or (even 8) shot models. Stick with good name manufacturers. I don't think anyone mentioned bobbed hammer for no hang up on a pocket draw presentation. You will need to really think about your holster options. You'll probobly need min 2 options, maybe 3.

Aside from the wheelguns, if you were to go semi-auto I would recommend the very simplist of models from Kel-Tec, Taurus, etc...

WHATEVER WEAPON YOU CHOOSE - BECOME VERY WELL PRACTICED WITH IT!

I whope everything goes well for you. But let me give you this advice.

Learn to identify problems or problematic characters quickly. Never let your guard down. Armed or not, never be around trouble. If trouble arises, even if it does not involve you - walk away.