Agree Lewam3, most pitchers I know are on shut down in August and Septemer and use that time to do core strength training.
VSFPcoach, I'm sure both you and your daughter mean well but make sure she has some free time away from the sport. I had one that used to pitch and we always set Mondays as "no workout day". To this day I regret letting her play three school sports plus fast pitch year round (fall ball). She tore her labrum as a freshman and after surgery was told that she was at high risk for another tear if she continued to pitch year round (she was very dedicated and pushed herself). She decided to give up pitching (she now plays 2nd and RF) and is a junior. Just passing along some experience, I can't tell you how many kids I know that have had serious shoulder/arm injuries from going full speed year round, its tough on their growing bodies.