From interrogations of those slavers, I think it's just an excuse for them to hook girls on drugs, then pimp them out to their kind by justifying their evil atrocities as "she was on the street."

I simply send certain electrical signals to emulate the contractions of childbirth through a process that is non-invasive and it leaves them babbling gibberish in pain, even offering to kill their own fellow criminals - anything to stop the pain. Technology sure is amazing.