This is terrible. This lady was simply trying to protect patient privacy and follow hospital protocol. This officer was way out of line. It appears he is the one that should have been on the phone with his own supervisor to get the appropriate paperwork to get blood if the police had decided that a blood draw was necessary to preserve some type of evidence. He above all else should know what is required to get blood from someone (person urn arrest, patient consent or signed warrant/court order).
Good for the nurse for standing her ground. She may not feel much like it but she was definitely the person doing the right thing in this scenario.