I hate to tell you this she has a mind of her own!! Let her try lots of different guns go to a ground with a gun shop attached.
spend some money on lesson with a good instructor they will develop her gun mount and advice on fit.
Don’t rush into buying a gun.
If it’s for clays get a 12 bore, it needs to be balanced right and don’t go to lightweight it’ll increase the recoil.
Loads of bad advice above IMHO and some good.
But no one can tell you the best gun for anyone over the internet, body shape is huge in gun fit chest, shoulders, neck, cheekbones and eyes all play a part in the right gun.