Just going on what it says in the article, it may be difficult to prove that anyone specifically forbade her to leave or made threats to prevent her from leaving.

I have some insight into this as my ex ended up in a similar situation in Malaysia. Rich family, no free days, 5-22 work hours.

It took me a year to convince her that it was not ok. They took away her passport, phone, she wasn't allowed to go out without them. I was ready to help her but she did not want my help.

In the end I'm sure she had to pay her "employer" for breach of contract since she left early. I think she had less than $1000 saved from these 18 months of work.

The thing that made me angry the most is that the family was incredibly well off, yet thought they deserve a slave (or more than one) at home.