Ambulance takes comatose, insured woman to "wrong" hospital, drives her to bankruptcy, too

You seem to be using moral indignation to equivocate on the term “owe”. Legally, she owes, based on her contacts with her insurance company and US law. Whereas you are making a moral, Utopian argument.

I agree it is unfair and that the current system should be changed (to single payer/universal healthcare IMO) but under out current system she legally press the balance.