A rose for Emily is a story about a woman with a mental illness. She obviously had trouble coping with reality, and couldn’t come to terms with the issues she was presented with. The story gives us a few examples of this.
When she was presented with her tax notices, and even called upon by the sheriff’s office, she paid no heed. Even when they came to her house and explained how there was no reason for her not to pay taxes, her reality held strong and what she believed in was simply the truth. When her father passed she refused to accept it, saying he was still alive. Only after three days did she finally give in and allow for his burial.
Then Homer Barron came along. She finally had someone in her life again, and now her father wouldn’t be diving him away as he had done to suitors in the past. She probably saw this as her last chance not to be alone, and must have been heartbroken when she found out he was “not a marrying man”. But, she would not accept it. She took matters into her own hands and ensured that her reality prevailed.