Is she shouldering the guns right? Pressed firmly into the pocket of the shoulder? A lot of new shooters seem to want to hold the gun "away" from the shoulder or only lightly pressed into it in anticipation of the kick. This results in the total "free recoil" of the gun being applied to the unfortunate human. Pressed into the shoulder, part of the mass of the shoulder becomes added to the mass of the gun, resulting in lower recoil velocity.
Also, the length of pull of the firearms may be too long for her. Adjusting this may result in less perceived recoil. Adding recoil pads and shirt pads will increase this length of pull, possibly making the perceived recoil even
worse.
Also. let her fire a couple of gas-operated firearms.
In these, the piston/operating rod gets thrown back while the bullet is being thrown forward, leaving the gun sorta-kinda standing in the middle until the mechanism hits the stops. The rate of application of the recoil is different (though the total recoil is the same), leaving the impression that the recoil is softer.
Usually.
And make sure she's wearing adequate hearing protection. I have noticed that shooting without it sometimes results in greater perceived recoil. It's almost as if the assault of the recoil + the assault of the blast add up to greater than the sum of the two assaults.
, but true. Check to make sure the stocks aren't pushing her earmuffs off her right ear.
And you should have started her out with a .22 or .22 Magnum. Seven mm Mag, indeed! Yeah, it was her choice, but you should have vetoed that one. (You do have veto powers, don't you?)