Answer: The narrator’s aunt is inappropriately dressed.
In this excerpt, the narrator describes the look of her aunt. She states that the first thing she noticed (because it was so conspicuous) was that she was wearing a dirty linen duster. However, beneath this, she was wearing a black dress with ornamentation that seemed to have been done will little taste. Moreover, the author states that the aunt had a complicated figure, so that most things did not look good on her. We can conclude that the aunt was dressed inappropriately.