Have you tried changing the surface on something she has now??
With people that have little hand surface is the key.
4000 abralon hooks a ton off dry for people with people that have revs but for people that don't it may never hook up and move.
I would try 1000 abralon or 500 abralon and see how that works..
even with little hand it may roll out though depending on the layout and the lane condition.
I give my old equipment to my Dad..mostly 4000 abralon and polished.. he had trouble getting it to move.. We took some of his pieces down to maroon and green scotch bright and he can cover boards with the best of them now..
but I would agree about the AMF mega friction..
That ball has a pretty high load of particle even though it is not marketed as such..
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18 mph,350 rpm,PAP 5 1/2 x 3/8up, 15 deg axis tilt, varied rotational axis deg.. usually 45+
HighGame 300 x 5, High Series 808
Book Average 220,PBA Xperience 185