3rd strike checked swing, uncaught by catcher

[josephrt1]

As you say, asking the umpire to check with a partner on a swing is not an appeal in softball and arguing balls and strikes is not allowed, however, in this case, I'd be doing neither. I'd be saying, "Blue, you didn't make a call on that pitch, wasn't it a ball?" [the OP said the umpire made no call. that's what i would be questioning.]