Depending on how much control your pitcher has I would throw inside riseballs and drop balls, make sure they are in the black, so even if batter gets around on them she will probably foul them off. Once she knows your pitcher is not afraid to come inside, the outside part of the plate should open up. I also love to throw first pitch change ups to big hitters. Difficult pitch to hit hard and most batters will take it for a strike, putting the pitcher ahead in the count.