I joined Pony Club when I was 7 and was a member until I aged out at 18 or 19. It's by far one of the best ways to learn safety and responsibility around horses, not to mention it's an unbelievable amount of fun! My club offered tons of opportunities to attend clinics with many different trainers and even got to compete on my region's show jumping team at national championships. The learning will be invaluable, I apply things I learned on a daily basis with my horses and she'll likely make friendships that last a lifetime. I still keep in touch with several of my old pony club friends.
Congratulations, she's going to have so much fun!