If you're wanting to try a .223 auto loader there are still some of us old guys that have Ruger Mini 14's. The Mini 30 may also be worth a look. Also, in the 10-22 size is the Ruger Camp 9. This is a carbine length semi auto chambered in 9mm. And if she's able to manipulate the action, a lever gun in .38/.357 might work. Lots of great choices out there…..good luck.