While Scarlett is sick, the two people she wants are Melanie and Rhett. She wants Rhett but doesn’t want to admit she needs him. She believes he doesn’t care for her, and so she’s too prideful to call out in vain. Throughout the story, during the hardest times, Scarlett has always wished Melanie were with her. In her delirium, she believes she is Melanie in pain during the siege of Atlanta. This suggests that on some level, Scarlett does sympathize with Melanie—but as usual, she’s too afraid to admit this when she’s fully conscious.