Siblings Green Card is like planting mango trees, in India we used to have saying that mango trees takes so long to bring fruit that one generation plants the tree and the second generation eats the mangoes. It's kind of that for sibling cases, it takes 13 years for the Green Card to come through and there is no way we can expedite that Green Card. However leaving the option of Green Card filing you could look at the things like sponsoring her for her student visa if she wants to study or if she is an professional or intent to be professional soon she can come on H-1 or L-1 visa, like other people do. f you have money you can gift her half a million or million dollar depending upon what kind of money you have that you can invest in her. So Investment visa could be an option but there is no way you can expedite sibling green Card.