Does the gun have open sites or a scope? A scope would probably be easier for her to shoot accurately, just site it in for the range you think she will be shooting. Either way I'd say, take her out a few times and do some taget shooting with it. Maybe if you have a friend with a .243 or someother small caliber gun with a really heavy stock, then use a rest and hopefully that extra weight will help keep the gun still and thats also less recoil for her.
If they weren’t meant to be eaten, then why are they made of meat?