OP, better option may be find wife a youth model in 308 and have her hold in in the gunstore compared to std rifles.
Wife hunts with a youth model 7-08 not because of recoil, because we feel it's a good round and was available in youth model.
She tried 30-30, 375win, 270, 30-06 before we figured out calibre/recoil had nothing to do with it.
Rifle balance did. Std rifles just simply have too much "end" barrel weight and she had trouble holding the rifle steady for any length of time.
Put a shorter, weight closer to shoulder youth model in her hands and she hasn't looked back.
The Ruger American Compact is a youth model, thx.