Matilda Loisel is a character from the short story "The Necklace" by Guy de Maupassant.
Matilda is a young woman who is deeply unhappy with her life as a middle-class woman. She is constantly dissatisfied with her modest home and her simple clothes, and yearns for the luxuries and social status of the upper class. She feels that she has been denied the life she deserved and is envious of those around her who have more than she does.
Matilda is a very beautiful woman and is often described as having a "pretty face". She is very conscious of her appearance and is always dressed in the latest fashion. Despite her beauty, she is not content with her life and is always longing for more.
Matilda is very ambitious and is always looking for ways to improve her social status. She is willing to do whatever it takes to achieve her goals, even if it means borrowing a necklace from her friend Madame Forestier to wear to a fancy party. She is willing to risk everything in order to be accepted by the upper class.
In the end, Matilda is forced to pay the price for her vanity and ambition. She works for ten years to pay back the debt she incurred from replacing the borrowed necklace. She becomes old, tired and her beauty is gone, but she still continues to work, not only to pay her debt, but also to continue to live the lifestyle she desires. Matilda learns the hard lesson that true happiness cannot be bought with material possessions or social status.
In short, Matilda Loisel is a character who is unhappy with her life and is constantly striving for more, even if it means sacrificing her own happiness and well-being. She is a complex character, who is driven by vanity, ambition, and a deep sense of dissatisfaction with her life.