I like the reduced load or Lite .308 option. I would try that yourself first and see if you think she could handle it. I would not let her shoot the .308 with a standard ammo. It is very hard to desensitized a young person to the experience of heavy recoil. You don't want to scare her. Hunting / Shooting should be fun. If you want to buy her her own rifle I also think the .243 is a good option... maybe a 7mm-08.