Answer:
Due to damaged she done to his name.
Step-by-step explanation:
Armand wants Désirée to leave his house because she has damaged his name through the child she bears. When Désirée leaves his house, she does not return to the Valmondes, as her mother requested to her. The character of Armand represent a man who strictly follows his culture and norms. The social norms of the time is that if a girls bear a child without marriage so it will not be welcomed or accepted in the family.