Okay, I misread it as a tweet.
In any case Gregory did not ask her the question hence she could not have hit his "pitch".
She is the like the person who sits in the stands and says what the players should have done. Get in the game, do some interviews besides Sean and Gretta, and see if YOU can ‘hit the curve ball’ Ms Palin. It requires thinking on your feet, not responding to something that has already happened.