I do believe that trafficking is more convoluted than that.
What typically binds someone to their trafficker, or pimp, is that the pimp fulfills some need. Frequently the need is for drugs, but also simply food/shelter and protection (those who are internationally trafficked may be held by keeping their passport, or convincing them that they will be deported or worse should they leave or become known to LE). Many young women (and presumably men as well) who are trafficked not only believe that they have no other survival options, but they are frequently seduced to believe in a romantic connection with their captor.
I still fail to see how anything about this particular case suggests human trafficking.