Who is the main character in "Desiree's Baby" by Kate Chopin?

Kate Chopin's short story "Desiree's Baby" has at the
center of the conflict the child of Desiree Valmonde and Armand Aubigny.  Yet, the baby
in the title is designated as Desiree's only.  This psychologically slanted title leads
the reader to focus upon Desiree as the main character whose life changes after she has
married and gives birth to a baby. For, the child resembles the mulatto slaves of the
Aubignys, Zandrine and the young boy who fans the baby one
day.

That the responsibility for the baby's appearance is
believed to be because of the mother is due in part to the unknown background of Desiree
who was adopted by the Valmonde's, and also to the patriarchal society of the Creoles in
Louisiana.  For, any consideration that Armand Aubigny's ancestry could be in question
is dismissed by him.  Yet, here lies the irony:  Armand Aubigny, whose father has one of
the great aristocratic names in the area, is the child of a woman of African descent, a
woman who dies in Paris and who has left behind a letter to her husband that reveals the
truth.

As the main character of "Desiree's Baby,"  Desiree
undergoes great conflict and she meets a climax:  Armand wants her to leave his house. 
She does so in despair, never learning that her husband has duscovered the truth about
the baby's appearance.