Staging is the process of selecting, designing, adapting to, or modifying the performance space for a play or film. This includes the use or absence of stagecraft elements as well as the structure of the stage and its components. ... In film, staging is generally called set dressing.
I think the author established anger as the mood in the excerpt. It is noticeable how the character is furious (for whatever reason) and shows her emotions by tearing that thin handkerchief into ribbons.
