The exposition would include the protagonist, Mathilde, comparing what she has to what she wants. This would include discussing materialistic items; for example, she described her draperies as ugly, and she mentioned how she dreamed of oriental tapestries. (pg. 199)
Climax
The inciting incident would include Mathilde receiving an invitation to a ball, held by the Minister of Education from her husband, Loisel. Although at first she doesn't want to, after discussing her outfit with her husband she decides to attend.
Falling Action
The rising action would include Mathilde purchasing a dress for the ball with money her husband had given her. She borrows a necklace to complete her look from her dear friend, Mme. Forestier. However, after an amazing night, she returns home only to realize that she had lost the necklace. She and her husband do everything in their power in order to recover it.
Resolution
The climax would include Mathilde finally returning the necklace (a replacement they had bought for about 36,000 francs) to her friend. After all the hard work and stress, she had returned it.
The falling action would include Mathilde and her husband having to spend the next 10 years working to pay off every bill, fine, promise, debt they had made. Both had to completely change their lifestyle. Mathilde was certainly not used to having to do her own cleaning.
The resolution would include Mathilde encountering Mme. Forestier on the street and approaching her to finally tell her the truth about the necklace after all this time. Her friend doesn't even recognize her; Mathilde's lifestyle had changed her appearances so much. She learns the truth about the necklace; it was only a fake and worth no more than 500 francs.