.
It was turning back to the city that got Lot’s wife killed with the rest.
They had been called out of the city by the angels, and she disobeyed. A sulfur rain storm will cook you well.
Stories about radiation are nonsense.
She turned away and got out of the protection of the angel. Sounds extremely linear in it's destructive ability. A volcano would rain down in a perpendicular fashion. This isn't the Lost Raiders movie, just looking at something does not cause anyone to be ionized, unless it is emitting some form of radiation.