Sorry, can't help myself--
The lady with the cut on her chest, now that one isn't too hard. Sharp cuts, like razors or scalpels, slice cleanly through the layers (but not too deep). If this happens on your finger while whittling, model-making, or doing amateur car repair, you go crazy if you happen to see them. If you don't witness the event, pain somehow manages to wait until you "see" it. Either way the wound needs treatment, but the emotional pain and nausea doesn't start until you see it. Again based on my experience.
So once you've been cut, it's clear that the wound on your chest, that you can't see, might heal faster than one on your thigh, for example. Even the smallest wounds are irritating daily when they are on your finger, or tongue, or some other highly ennervated tissue.
Double blind Buttocks test. Equal lacerations, totally clean, great "post-op" on both, one on each butt cheek. The prayer team of your choice gets a random cheek 'A'. No prayer for the 'B' cheek. Place your bets and donate the winnings to the charity of your choice.