Those STS's and Nitro hulls will make excellent reloads. With light target reloading they should last 8 or more firings. I would suggest looking at 1 oz and 7/8 oz loads in the lower to medium velocity range. These are easier on recoil and might be more enjoyable for her to shoot. I have seen a few new to shotgun shooting quickly lose interest because of heavy recoil and/or a poorly fit shotgun.

BTW, don't forget to save your boxes. You will need them to hold your reloads.