I've been introducing my daughter to shooting, starting with air rifles and then with my S&W 66 - 6" barrel with .38 specials. She doesn't want to try my 9mm or 45acp and she is happy with the .38 special. I'm concerned that the 6" revolver is too big for her and a 4" would be better and introduce her to Bullseye and IDPA with the revolver. She's not bad, on her 7th shot ( empty cylinder ) she doesn't flinch. What would you recommend, a 4" Model 19 or Model 10 or something else?
Quit being concerned and just let her shoot.
As individuals, we like what we like...whether that's esthetically or practically. If it gives us joy in the world of firearms, we're far more likely to shoot it. If it turns out to be somewhat less than our imaginations tell us, it'll fade into the background in favor of something else.
Or, perhaps, it'll encourage us to develop our skills and handling abilities in order to better handle what it is that brings us joy.
Daddy's Little Troublemaker barely breaks three digits in weight, but she absolutely LOVES shooting my 5 1/2" Colt SAA in .45 Colt. And the first "real" gun she shot, by her choice, was my Remington 870 12 gauge shotgun.
She picked out her first target to shoot at by herself (a zombie target) and her first shot was a tight pattern centered on the head. I remember looking at her silently and she returned the look and said, smooth as can be, "Zombie, Daddy. It's gotta be a head shot!"
The first shot from her using my Colt SAA was smack between the eyes on the target, too. And her only pistol experience before was using my AMT Automag II (.22 WMR).
So I say let her shoot whatever it is she has a hankering to shoot...and let her pick something else as her own experience and tastes guide.
The beauty of firearms is, of course, that we can have more than one...as many as we like, in fact. Some will be more suitable than others for a variety of reasons.
You know what she's going to remember out of all this? She's going to remember things like "The first gun Daddy let me shot was (gun)!" "The first time I hit my target was (memory)." "I can't believe I could handle that gun when I was XX years old!"
So let her shoot whatever she wants while you explain the ins and outs of whatever it is she's shooting. Her experience doing that will bring REAL meaning to things like weight, recoil, trigger pull, SA/DA, etc. From that, she'll be better able to choose something that fits her for a particular use.