recommend me a 9mm handgun for the girl..

[PPGMD]

Why? At the range, they're always loading a fresh mag from a slide-locked-back position, so the first shot (and all subsequent shots) are SA.

And they never train the double action pull? Or are they like Horatio and always thumb cocking the gun?

I carry, and shoot DA/SA guns, but I have thousands upon thousands of rounds down range, along with many times more in dry fire practice. Yet when I teach a new shooter, I tend to start with the Glock. I'd rather pound gun safety into a persons head then spend time helping them overcome the DA/SA transition, and learning how to pull a 10lb trigger.