Eulalie is Ellen O’Hara’s sister. Scarlett finds her boring and overly scrupulous when she visits them in Charleston and learns that she and her other sister, Pauline, disapprove of Ellen and Gerald’s marriage. After Scarlett starts earning money at the sawmills, she sends money to Eulalie and Pauline, but they later write to her and express their disapproval that she’s become a businesswoman and that Ellen would be ashamed.