Final answer:
Madame Loisel approaches Madame Forestier for jewelry due to her desire to appear wealthy, which eventually leads to her downfall. However, Loisel's misfortunes are a consequence of her own decisions, not her friend's actions.
Step-by-step explanation:
Madame Loisel approaches Madame Forestier to borrow jewelry for the ball, motivated by her desire to appear wealthy and sophisticated in an effort to fit in with the high society attendees. This desire stems from her dissatisfaction with her middle-class lifestyle and her longing for the luxury and approval of the upper class. She borrows a diamond necklace, which she later loses, leading to her misfortune of incurring massive debt to replace it. While Madame Loisel may blame Madame Forestier, it is not justified, as her own choices and values, not Madame Forestier's, led to her downfall. Madame Loisel's unfortunate circumstances are a direct result of her own vanity and materialism, rather than her friend's influence.