How does Blanche describe a woman's charm?

In Tennessee Williams' play "A Streetcar Named Desire," Blanche DuBois describes a woman's charm as something delicate and elusive, akin to a fading flower. She believes that charm is not just about physical beauty but also involves an air of vulnerability and sophistication that captivates others. Blanche often emphasizes the importance of maintaining an appealing façade to navigate a harsh reality, suggesting that charm serves as a protective shield for women in a world that can be unkind.