I did get a rise out of one woman. I asked her if her father knew what she did to get money. And she said "Feck you". or some mispronunciation of the obvious well known phrase. (It's amazing that after only 2 months,I can no longer remembe exactly what she said. )
I ask women if their father knows what they do, and men if their mothers know. I know that some of these girls don't feel close to their fathers, maybe were even abused by them, but I think most girls even in the countries these people call from aren't in that situation, and they want the respect of their fathers. I'll admit, if I were broke and needed money to eat. I'd take a job like this too, and even worse.
I don't use the phrase, "earn a living". I just say "get money".