In the UK, there are agencies where (usually middle-class) overseas young people can come to this country, live-in with a family and help around the house. A friend of mine has a Chinese girl and a Polish girl staying. One does a little cleaning for her keep and the other does a little child-minding. While they are over here, the foreign girls get to live with an English family, improve their English and broaden their horizons. They don't get paid for the work they do. Should the minimum wage rules apply here? Are these children being exploited?
All I am saying is that, where you have a live-in situation where the person is expected to be reasonably available to help the family, and you have an agreed monthly lump-sum wage, the minimum wage/hours per week formula cannot apply.
And what I am also saying is that there is a real feeling that, because the employer is Indian, she is being 'primitive' in some way. That, to me, smacks of racism. I suspect, if anyone is being primitive it is the US authorities.