re: She stopped the show during Rose's Turn!
Granted it's not the same situation in a way--but Merman was not afraid to stop a show. Have you not heard the story Elaine Stritch tells about how Ethel once walked all the way into an audience to throw a drunk audience member who was yelling at her all the way out onto the street? Again, it's not the same--Ethel's case was much more justified--but still.