Re: .380 - Walther PPK or Beretta
P-shooter's giving you some good advice!
On the choice of auto's, I'd go with the Walther; I had (2) TPH's, out of Alabama, that had functional problems, the one I have now is 100%; the (5) PPK-S's,I've owned, all Alabama guns, were all 100% functionally! I like the lesser thickness of the Walther, over the tilt barrel of the Beretta; if your wife cannot perform an 'immediate action drill', on either weapon, a revolver is THE choice.
And, while I'm sure this will start some debate, in a 2" revolver, at household/defensive distances, my ammo choice is a 140 gr flush seated wadcutter, right out of the target ammo box; full caliber hole, minimal recoil and flash= maximum results!
Don't start no s**t and there won't be none, Terry