Tennis balls are also good for infield flies. I can place them much better than a softball. You can practice the outfielder calling off the infielder or the 3rd baseman calling off the catcher, etc.THIS!!
Bryan Pack @ USC Upstate does this at all of his camps, and to me it's one of the highlights of the camp! He's hitting absolute pissrod lasers and talking pure junk to every girl that steps in at 3B! He's very good at it, the man could put a tennis ball in a tea cup! It was always fun to watch!
Also, how are her eyes? Maybe a checkup is in order?