Any luck with taking the cell surface up to 4000 w/ a fair amount of polish? Putting the pieces of the puzzle together, dull balls don't make the corner, she is a down & in bowler, polished balls work well, probably bowling on a X-mas tree THS, lower rev rate. Sounds like her equipment is burning up before it gets to the break point. This will cause a weak or non-existent ball reaction off of the dry. Since she has a low rev rate and probably playing mainly on the outside of an already dry area of the lane with aggressive equipment, this happens very quickly. She definitely has the right idea with using some weaker, and polished equipment. She definitely doesn't need any high end aggressive equipment to suit her needs. I would imagine a mid line to lower mid line ball would do just fine. Something with a polished coverstock or pearl cover will work well. If you want to stay with track, Probably a 5 series ball is in order. Maybe a 505C might suit her needs.