I have heard the Kahr guns are good quality but have never fired one. It has been my experience that full sized for caliber, guns are more reliable.
I think the Glock 19 is about as small as a nine should be. The really tiny ones tend to be difficult to shoot, make a lot of noise and are at least a bit less reliable. From reading tests of them, they seem to be about as accurate which might be from careful fitting.
If I were going to get a .380 it would be about the size of the PPK. If I want a really tiny one it would be a TPH. The Browning model 1910 and similar Colt pistols are great designs too.
What I have found is that small light weight compacts are very difficult to shoot, They tend to roll in your hand and they recoil like hell.
Many recommend the SW 442 airweight for gals
I’m a guy, and I dont like the punishment it delivers, I also find the trigger to be long and stiff.
I give that 442 to women to shoot and they take one shot, shake their heads and hand it back.*it hurts and its hard to keep on target*
I give them the CZ 82 and they smile.