How the characterization of the main character in "The Birthmark" helps build ONE theme

Write a 1000 word analysis on how the characterization of the main character in "The Birthmark" helps build ONE theme seen throughout the short story. There are attached images below of the short story (and the book it came from for the works cited). 2 sources: one primary source (the short story "The Birthmark") and one scholarly second source.