Ellordings, you are correct that this story couldn't actually happen in any society with rule of law, but I think of this as taking place in some society with modern things but a corrupt government - or, at least, a corrupt police force. After all, all we know about Monica's troubles is what Marcus says, and he has a vested interest in making her case look more hopeless than it is. The absurdity of a modern legal system acting like this has to be overlooked for the sake of the story. I don't think that a simple bankruptcy would reduce someone in Monica's position to utter destitution; a certain US president has practically made a career out of going bankrupt. The game needs this legal sanction to really break her.
The ranch serves as a motivation for Monica. It doesn't exist in the game yet, so don't let that put you off. The Engrish in the game is obvious, but I think you over-state the extent to which it interferes with the game's enjoyment.
Such places as the ranch mentioned in the game DO EXIST in real life. I know some people, and trust me I can assure you that such places are very much REAL... It's called human trafficking. However, it is a bit far fetched that someone so high up in the socioeconomic stratosphere could be reduced to what she has been so swiftly without a proper explanation. It's usually a Chinese girl traded away by her parents for passage into the states. Sometimes it's a homeless or runaway girl, or just a junkie down on her luck. Although to be fair her husband is a VERY wealthy man, and may have made some connections. The only realistic way this could have possibly happened to her is if someone else of enormous wealth such as her husband has betrayed her.
For added realism these 5 things will be added to make it as realistic as possible.
1) Monica will be discretely branded. (Not a tattoo, but a brand like cattle) As she ranks up additional brandings stating her rank will be placed over her initial brand to show her increased ranking.
2) Heroine, can and will become an addiction to Monica. It will be used as a method of control over her. No ghetto street shit cut with who knows what, but high grade high quality shit.
3) She will see a doctor. The doctor is also crooked. Her health will be very much looked into. Sick or dying cattle is useless.
4) Her diet will change to a liquid diet. This wil keep her more dosile, submisive, thin and allow for easier anal sex.
5) The blackmarket organized crime syndicate that is to keep her will have it's own form of currency.