So I have a little dilemma. I am torn between two pistols, I plan on letting my girlfriend carry it.
Wow..... just.... wow. You two been together long?
I'll agree with everything already posted; AND I'LL ADD that you should let her fire all kinds of pistols and revolvers. Maybe you can help her out with the reality of KD charts, what works and what doesn't; but SHE will know what she can and more importantly WILL carry. When I first started dating this girl (daughter of a rock-solid "Brady laws are too lax" Liberal), I took her out and we devestated 20-30 paper targets with a couple of .22LR carbines.
NO this is NOT where I'm going, just read on.
About halfway through I realized that I was firing my Dad's old Single-shot Savage continuously, because she had snagged a box of rounds and was reloading and firing my Marlin continuously. Oh she shot both; she just preferred the Marlin!
10 years later and now my wife and while at the range with me; she grabbed ahold of a SA-WEEET S&W Model 15 revolver that I bought for a song at a Murphy's Gunshow.
"I like this .357; how about you go find yourself another one?"
4" barrel, square butt wrapped up in a WOOD Monogrip, which I put on it so I had something to wrap my long fingers around. She can hold it just fine; she now buys purses with extra-long inside pockets; takes out the zipper and installs velcro for a faster presentation. Another side pocket holds a couple of old Comp III speedloaders. And she's gooooooooood.
Three pieces of advice:
1.) "CorneredCat.com" - It didn't exist back during these experiences with my wife of now 30 years. Kathy says she never met a "Mama Bear"; I sleep with the mother of my three children every night.
2.) Let your GF do her own research (you can help her out, just don't say "You want/need THIS) and find what
A) Works in an SD situation
B) Works FOR HER in an SD situation.
And 3.) Be prepared to be bested now-and-then when you're on the range with her.
And one more...
4.) I see you're in AZ. If you ever happen to be in either of the "back parking lots" of the hospital in Yuma late night/early morning, and you see a blonde walking out in nurse's scrubs and carrying a big purse; assume a non-chalant, almost submissive stance and POLITELY say "Good Evening". Else you may experience the result of a woman that doesn't like to be "called out" for work in the middle of the night; but DOES LIKE having picked out her own SD weapon.
Just Sayin'