wether it happens for stealing signs, baiting the pitcher or pointing a bat, it does happen, especialy in the more aggressive tournaments, is it done on purpose, i would say no, its more out of desperation and anger by the pitcher for what ever reason at the moment, and may be nothnig more than her trying to push an aggressive batter off her plate, but ive seen vengence hits before, my dd gets plunked at least a few times a year, so its no big deal, just a part of the game,