I had this as my 10lb 7oz bubs had shoulder dystocia. In my experience and from what i was told several times SD is a medical emergency. It was an urgent flip onto my back from the side and legs held up to my chest and PUSH to get this baby out. Apparently they have 30 secs to try this before they move onto the next 3 manoeuvre's which if bad enough involves dyslocating the shoulder and cutting the pelvis
Perhaps the baby's shoulders were just at an awkward angle and she was trying to help bubs descend? Seems a weird thing to do or write for no reason.