Yep. She is old enough and big enough that a -10 is the place to start. I wouldn't poo-poo a select few -9s, either.
Swing as many as she can, hit with them if possible. A favorite will emerge if she gives a few a good session or two with real softballs.
Swing as many as she can, hit with them if possible. A favorite will emerge if she gives a few a good session or two with real softballs.