I recommend you look into how sexual traffickers employ various tactics to entrap woman because Vince just did the billionaire's version of the same tactics used by some gorilla pimp off the street.
Yes, she made a mistake into believing that having sex with Vince initially for the prospect at a well paying career. She's young and had recently experienced life-altering trauma where a break from someone like Vince probably seemed like a dream for the cost of having sex with a old man. However, that does not warrant her to essentially be groomed with a lavish lifestyle and then threatened to have it all taken away and then possibly blackballed and/or your reputation ruined by someone who has the power like Vince. Even 'if' the acts were consensual at first, this does not give permission to be progressively forced to perform more and more degrading acts or else you have your entire life ruined. This was a process of purposeful physiological grooming that doesn't happen overnight.