Definately throw overhand. I have been doing it that way, for 40 years. Also, use tennis balls, if you want a safer ball.
Have you tried the drill where you throw the tennis balls to her, so that it bounces about 3 feet from her, but comes up into the strike zone. Trying to hit those are fun. Bustos hit a pitch, that bounced into her, over the fence, once.
Have you tried the drill where you throw the tennis balls to her, so that it bounces about 3 feet from her, but comes up into the strike zone. Trying to hit those are fun. Bustos hit a pitch, that bounced into her, over the fence, once.