You were much more polite than I would have been.
Maybe her real issue was a GIRL pitching and working and using BASEBALL facilities which everyone knows are for boys only. (tongue firmly in cheek)
LOL! I agree, that BB lady is creepy. And doesn't know anything about softball pitching. A few summers ago I was jogging with my dog - a corgi. Corgi's have very short legs but they are athletic and do just fine - they were originally cattle dogs. We had been stopping at little water sources all along the route and my dog was doing great (and note - this was a 3 mile slow jog!). A lady actually stopped me and said that I was overworking my dog. I told her that we were just about done, that we just had to get to the end of the block (which was true). At the end of the block we stopped - I turned around and saw that the lady was actually STILL watching me. She probably had the ASPCA on speedial and was just waiting for her chance to call me in. Heavens.
I do hate the cheers, but I hate UCLA's, too. And Michigan - you could argue that playing their fight song after every hit is a bit much. At my alma mater, the band used to yell "sieve sieve sieve"! at the opposing hockey goalie after every goal - along with "hey goalie, your mom called and she says you ....bleep....". So it could be a lot worse. I agree that the mom in questions should have handled things better.