Give the nurse a break, folks. My bet is that she did exactly what she was trained to do. I further bet that the training (regardless of our opinions... regardless of any exceptions..) was exactly what Fire Risk Managers wanted her to do.
That being said, If I feel I understand the situation better than someone like the nurse... I'll use my best judgment. I'm betting that before just reacting to his need to be with his family and protect them... Ors considered whether going through the fire door was apt to increase risk. If so, great. If not, he made a mistake!