TEWWG

"What she doin coming back here in dem overhalls?...in her class?--" (page 2)

This paragraph tells us a lot about this woman. She works late hours, longer than anyone else (she's coming into town when everyone else is already on their porches). She's a widow who was left with money from her husband's death. This woman is forty years old. She has long hair. She has been keeping company with a younger male (they might have been engaged). She doesn't seem to have the money she once had (they assume the guy did something with it). The guy she was with might be having an affair with an even younger woman than himself. And this woman in overalls is looking for mates outside of her class.
The paragraph also tells us something about the person speaking. It shows us that they are probably less educated and southern because the dialect is distinctly southern.