RE: Qualifying w/a 20 gauge shotgun buckshot size?
First off I'm sure you really want to get her qualified and it's great that she is wanting to get into the woods with you. IMO you need to have her shooting the same load that she is going to hunt with and also one that is legal in your state. Some of those sound awfully smallto ensure a good/ethical kill. I agree with Follower on the 00, is a slug an option for you? Good luck