I've been bowling back-up for a long time, with decent success. I can send you some pics of layouts I have on different equipment if that'd help. I can tell you that IIRC my PAP is actually 0 up or down...which I found kinda odd, but then again; I am a back-up bowler LOL. Just message me if ya got any questions, as I'm the night manager at my alley, so could get my layouts/measurements relatively fast.
Will
PS...the layout should almost definitely resemble a LH layout, though would have to see her bowl first. As for equipment, I throw aBrunswick Forest Quantum, Brunswick Siege Defender (overseas release), and Storm Alpha Crux that all give me great motion when there is some oil out there...