. . .and as he was talking the whore yawned, not because she wasn't interested in what he was saying but because she was tired, which irritated Sergio and made him say, in exasperation, that in Santa Teresa they were killing whores, so why not show a little professional solidarity, to which the whore replied that he was wrong, in the story as he had told it the women dying were factory workers, not whores. Workers, workers, she said. And then Sergio apologized, and, as if a lightbulb had gone on over his head, he glimpsed an aspect of the situation that until now he'd overlooked.
It would be nice if Sergio were to share the insight. We must noodle it out for ourselves. I would not trust Sergio's insights anyway.
Therein lies the problem. Sergio's insight may simply be that the victims are predominately factory workers and not prostitutes. The guy is not a helluva lot of use to us, the readers.