That the maid was underpaid is ONLY a CLAIM.
The maid shared a Luxury apartment with the Indian Ambasedor. The Rent for a Luxury apartment in New York is around 4,000 $. That would mean that the Maid's share is 2,000 $ per month.
The food expense in new York is easily another 500 $ per month. A chaufer driven car is another 100$ a day. That is easily around 2000$ a month.
Add that up along with her salary, the total CTC of the maid comes to 2,000$ + 500$ + 2000$ + 750$ = 5,250$ a month.
There is not even a prima facie evidence of labor exploitation.