First of all, Welcome! I hope you enjoy the merry-go-round with the rest of us riders. I would choose the Vendetta over the FS3 at that age. It's a two piece design which will be more forgiving on the mishits and have less hand sting.
I agree with YOCOACH on the Vendetta over the FS3.
Another valid choice in the drop-12 arena is the Combat Lisa Fernandez (two-piece, alloy barrel/composite handle). When my DD was 9yo, she used both the Combat and Vendetta, and the performance was about equal overall. The Combat can be easily found on eBay for a very reasonable BIN price. If you have the patience for an auction, you might be able to get it for a steal.