I AM trying to be understanding, but still one can't just torture a human being to save another. We are not talking about holding down an incompetent patient to get her civilized treatment. This was cruel. I wouldn't be surprised if that baby is a walking PTSD for the mother.
I know time was of essence, but there are certain things a physician just can't do. This was one of them. Beyond using a lot of local, they could have had her breathe nitrous, at least; it's not rocket science to turn on that anesthesia machine and rotate the dial. Even paging the chief of anesthesia, or an ER doc in house, may have gotten them some suggestions (e.g. giving the mother ephedrine to treat the hypotension, bolusing the epidural with lidocaine,), if time was of essence. Still, there is no excuse if the mother said STOP. My guess is that her argument will be that the patient was altered and unable to consent, or to withdraw it, in an emergency.
I hope I will never have to make this kind of decision, but, still, there is stuff one just can't do.