Explain how is Madame Forestier a static character....

In Guy de Maupassant's short story "The Necklace", the
character of Madame Forestier is a great example of a static character. A static
character is defined in literature as a minor participant of the plot who, regardless of
what role it takes in the story, does not become affected by any of the situations to
the point of actually changing.

In not so many words, a
static character is just "there" and really does not change nor influence the story at
all. Madame Forestier is clearly a minor character. She simply lends Madame Loisel the
fake diamond necklace that the latter believes to be real and then pays for after she
lost it. Madame Forestier is simply a friend of the main character who facilitated the
her with an object. The object may have changed the main character, but not Madame
Forestier. The loss of the object, even, did not change a Forestier, who simply missed
it casually. However, the loss of the necklace changed Madame. Loisel's life
forever.

Therefore, if you analyze Madame Loisel and how
she changed in the story you can clearly see how Madame. Forestier would be a static
character in comparison.