I'm not knocking your Mom, but , this might be a case where the ball is more than she needed. If she has an end over style, and going to stick with that, it sounds , to me anyway, she/you wanted a 'hook out of the box' and that's not always the best thing.
IMO, a person's style, has to match up with the ball, to a point. If she is willing to change deliveries, then IMO, it's still to much ball, but it's a start. I have seen and heard of several folks that after getting a new ball, not set up for their delivery, they say the ball is a junker. Not always. I think the ball must match (somewhat) to the bowler. But, if that same bowler is willing to learn another delivery, then it's a start.
Your driller will be able, as stated above, to find her PAP and go from there. If you are wanting max hook potential, then the 3 3/8 pin to pap is the layout.
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AZ Guy aka: R & L Bowlers Pro
rlbowlerspro@cox.net
www.rlbowlerspro.comSleep is over rated.