How does Mrs.Slater plan to outshine the Jordan. what does it reveal about her character?

Mrs. Slater was not very happy with the mourning dresses that she and her family were wearing. In fact, she had ordered new dresses for everybody. However, she thought that her sister wouldn't have thought of mourning dresses and so she would outshine them there. Mrs. Slater was a very superficial person. She was not concerned about the death in her family but was more bothered about her appearance and how to be better than her sister.