Anonymous wrote:But, if you're earning around $150,+ you can sponsor for a green card or residency card. Other than these three options on this board there's nothing you can do for her.
Please cite the part of the immigration law that makes it possible. I am unaware of the rule that allows anyone earning 150+ to sponsor domestic employees. The fact that you use language like "green card or residency card" (the same thing) leads me to believe you don't know what you're talking about.
The only US citizens allowed to sponsor a domestic employee are the ones who reside abroad, and are coming to the U.S. on a temporary basis, no more than four years. And the employment relationship must have existed before their repatriation. So if the OP is an American working, say, in Paris, and then in London, and then is sent back to the US for a while, she can bring her nanny with her, but not in any other way.
http://www.homeworksolutions.com/knowledge-center/u-s-department-of-state-regulations-b-1-domestic-servants/
If the OP has just met a nanny who would like OP to sponsor her for a green card in the US, then that is not possible.