What kind of person is M. Loisel?

Mathilde Loisel is a beautiful woman who yearns for a life of luxery and wealth. When she is invited to a fancy party, she borrows a necklace from her wealthy friend Madame Forestier because she refuses to go to the party without expensive jewels and a beautiful gown. After a night of happiness, during which she immerses herself in the life of glamour that she believes she deserves, she spends the next ten years paying for her fleeting happiness as a result of losing the borrowed necklace.