I think this is a bit of a stretch. What's also common between these three women is that they're in a situation where they don't have any real alternatives as a way to resolve their problems. Let's say someone presented you with "choice" of getting fucked in the ass or getting shot in the head. If you didn't pick death, does this mean you have "a slut deep inside"?No, I don't implay that. That's what common between these three women. Being normal housewives and getting into difficult circumstances they resorted to various form of sex work. Most of the women wouldn't. So, each of them is a slut deep inside.
None of these three women picked prostitution as their source of regular income, until they saw no other way. This is hardly some sign of "having a slut deep inside" to me.
Yes, she may be forced to continue the work to settle her debt. But this is vastly different scenario from opting to work there voluntarily as some sort of "happy ending".Well, this is criminal organization as someone argued a bit above. She is indebted to the club. That might be even worse that the loan sharks. Lucy didn't want to work in the club as well.