Did that once by falling on the floor, probably it was out of place when she gave birth and she may have popped it back in. My doctor at the time told me there's nothing you can do about it but wait for it to heal. He's the one that told me it was probably childbirth since my 2nd child was large for me. It took me years to recover and I could only get into bed by going in on my knees! Driving I had to put pillows on each side and suffer til it got numb. I wish her the best of luck and hope she heals soon. I'll remember her in my prayers, I remember the pain very well!