Daughter is a junior in high school and has been a dominant pitcher the past few years. Experiencing problems keeping arm circle close to ear on way up and stomach on way down and this appears due to her upper body maturing. Also now tends to bend head/upper body back during pitch my guess is an attempt to free up lane to power line due to change in body. Any advice on how to adjust mechanics / body posture during pitch due to change in body would be greatly appreciated.