Health true, she does not have a legal requirement (an obligation in criminal law) to listen to instructions from EMT services in California, but if it goes to a hearing, she might lose her licence if she is a RN or receive other sanctions. A medical professional and even a medical student is supposed to get involved whenever no better-qualified professional is on the scene. And she can not argue she felt that resuscitation was not the gold standard of care for that particular patient, she never said so in the call. Also, EMT judged CPR to be gold standard care for the patient, even though a number of minutes had elapsed, and I doubt there was a medical doctor on the EMT crew, so, I would think they strictly followed protocols, EBM and whatnot.
Torah? I am sorry, this is not the basis of the law of the land – we wish! In countries with different legal systems from anglosaxon common law, even assisting a wounded animal may be compulsory. Yes, I think it’s a bestiality. But still, it’s good to be aware of the laws and don’t get in trouble unnecessarily.
In regard to halacha, she is a nonjew I think, she did not murder, I don’t think she stole in an enforceable way either, so I think she is not deserving of any punishment.