I dont mean to be rude to anyone here, but your all giving bad advice. Seriously dont give advice if you dont know what your talking about. As for what ball to get, different weighting like your saying wont do anything. Its the coverstock of the ball that will get it going in the right direction. Before you get her a new ball though, you may what to teach her to throw it correctly, and to get forward roll. As for a ball though, Brunswick power grooves are good, columbia reactive scouts are ok, tornados from ebonite are also ok, good balls to start with.
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16 years and still going strong! 16 years old that is!
The names Warrior Princess, Xena..Warrior Princess
And why would I "saw" pins in half, THATS A WASTE OF PINS!