I tell my daughter all the time softball is the only team sport I know of where you are allowed to talk trash and not be penalized for it. Teams often have organized cheers directed at a specific opposing player. I honestly don’t think it’s meant to be mean spirited but it’s common and just seems to be an accepted part of the game.
If a pitcher is a high or low with a pitch they have a cheer for that. If the a runner steals a base they have a cheer directed at the pitcher for falling asleep. If the catcher comes up and looks back a runner on a base they have this cheer where they basically say, “She won’t throw it, she’s too scared, she’s too scared.”
When I coached I told my girls they couldn’t have a cheer directed at the other team, only ones meant to support our team. It made my daughter so mad. Lol.