There wasn't anything or anybody to put out the fire. In that day and time, it burned until it went out.
The whole dang house roofs fell in to bury the interiors and kept burning. Had to. I'll bet it spread from house to house,
just like modern fires do. No other scenario. Run like hell with the clothes on your back. Left everything, it seems.
Maybe when the place cooled down, they went back for a look and a scavenge. We will never know.
For food & shelter, it must have been a really bleak outlook after that.
The dogs. By all accounts and artifacts, these were well-to-do people with very good homes.
The dogs could very well have been pet stock. Why they weren't just turned loose is anyone's guess.