Go for something like the new Tropical Storms, as she will find that finger tips will give her more revolutions and more turn and more hitting power, so ball-wise its best not to stray too far away from what she is used to. If she really needs something stronger/more aggressive, the Power Groove's are still the best bang-for-buck you can get at the lower price range.
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Reality Is.......Working out how to carry the 10, only to start leaving the 7.