My DD started about the same age as yours. We started pitching lessons in June after our first year 10U team split up (half the girls, including both pitchers, aged up to 12U) leaving us NO PITCHERS. DD volunteered to try it, and began lessons. We played in a couple of low level B/C tournaments that Fall, then had 4 months to get her ready for TB the following March. Since then she has added @ 5MPH/year to her pitching speed. Some from additional practice/reps and some from growth. She is about to turn 14, so the 5MPH/year are now harder to come by!!!! LOL