Horrifying read. I recently read a book about a girl who was pressed into prostitution, and this reads much the same. [1] Before I was convinced that slavery was mostly a thing of the past, how awful to find out this isn't true.
Why would a criminal organization that trafficked you into a place where you have no legal recourse ever stop exploiting you?
Slavery is alive and well in most part of the world, especially south asia, middle east, Russia and Africa,where children with no papers are trafficked all the time for the worse things you could imagine. I'm not sure what convinced you otherwise.
The West has largely snuffed the horror of slavery in its sphere but outside of that it's the wild west. There are horrifying things to read if you go down that rabbit hole.
According to International Justice Mission [1], 50 million people are trapped in human trafficking.
1: https://www.ijm.org/