mrfrostee,
The saying that “Anything is possible†also means that many things are possible, and in the case of why she started leaving tenpins, there are quite a few suspects.
Bottom line is, her OVERALL ball reaction changed. The problem comes in trying to diagnose why.
Is it possible he pushed some oil out into her line? Sure, but depending on the conditions and the equipment used, it is also possible he helped dry out a spot that caused her ball to lose its energy a bit earlier, which changed her entry angle and finish.
Or, maybe they both ended up pushing a bit of carry down into the breakpoint, and her straighter trajectory was affected more by that than his because of the entry angle into the pocket.
Lots more can cause you to start pinging tens than just these things. Unfortunately, the answers are just as myriad as the reasons for leaving them.
Sometimes the right ball change works. Sometimes it’s a release change, or a speed change, or any other of a thousand minor changes.
If I could capture, and bottle, the solution to tenpins, I would’ve been rich a long time ago.