La Lupone was very upset the night she found out she wouldn't get the chance to play Norma Desmond on Broadway. So upset in fact that she smashed up her dressing room. Her final performance of the role in London is the stuff of legend. The ovation at the end was so sustained with so many people throwing flowers, she ended up laying down in them on stage, if memory serves. But she didn't make everyone's lives hell. In fact, she insisted that her dresser come to New York with her because there was nobody better. He stayed on after she left and Betty Buckley took over, but she was such a horror to work with, he left before she drove him to a breakdown.
Nothing precious, plain to see, don't make a fuss over me. Not loud, not soft, but somewhere inbetween. Say sorry, just let it be the word you mean.