"A Streetcar Named Desire" - How does scene 10 develop the audiences understanding of Blanche and Stellas relationship?

This scene of A Streetcar Named Desire effectively develops the understanding and perception that the audience have of Stella and Blanches' relationship, while using language and imagery to illustrate the tension between Blanche and Stella's husband Stanley. "Stella is lying down in the bedroom. Her face is serene in the early morning sunlight." (Pg46) The description using stage directions presents a very picturesque scene surrounding Stella, however from previous knowledge we understand that Stella and …

…child who is refusing to listen. In a way, this single line spoken on stage by Stella would present a prediction for the end of the play, at least in terms of who wins between Blanch and Stanley in the competition for Stella. She has successfully brushed aside her past with her sister, and chosen the new life with her husband and unborn baby, and the breakdown between the siblings relationship becomes even more apparent.