Unless she was specifically told either "Warm up in inning X" or "You're pitching in inning Y," I don't see how she magically should've known this. Or maybe if it's a known thing that pitchers on the bench are supposed to do some kind of routine.
Sounds like none of that from the OP though, so I guess your DD's only mistake was not being The Amazing Kreskin.
Sounds like none of that from the OP though, so I guess your DD's only mistake was not being The Amazing Kreskin.