I really cannot see what this nurse has to be upset about? This should be par for the course predictable behaviors giving the situation described and the subsequent reactions expected. Ill pt, kidney replacement?, if not pathology then abuse, if abuse then very likely the peripherals IE family, social status, education, all points to expected behaviours. Just generalizing so no abuse re peripherals.
People are upset in traumatic situations and one cannot reasonably expect reserved behaviours unless they are brought up and schooled reservedly. One has to be cool, polite,respectful and considerate because it's part of being a nurse aside from our clinical expertise.