The dialogue is coming directly from a characters in the story; involves the use of pronouns such as I, me, we, our, and us. Its set in the first person and is most noticable in the end of the story when they find Homer in Emily's home. "Then we noticed on the second pillow there was the indentaion of a head.". Notice the first person in that example.
The setting starts off in Emily's funural and then jumps back into her life telling her story that leads back up to her funeral. While telling her life story it is in and around her creepy old house in Jefferson, Yoknapatawpha County, Mississippi, 1861-1933. Her home is described as "Big squarish framed house that had once been white, decorated with copoles and spires and scrolled belconies in heavy lightsome style on the seventies."
The theme is a mix of things. First off it shows the struggle Emily is brought with while trying to maintain a tradition during the widespread radical change. The old Grierson home struggles to stay up with the new modern industrys and styles that were brought into Jefferson during that time period. It tell in the story "Miss Emily had been a tradition, a duty, and a care; a sort of hereditary obligation upon the town". This shows what she once was to the town, the change is what hurt her.