You did not say how she got her green card. There might be an opportunity to have derivative status. For example, if she got her card through an American citizen brother. But there is no such derivative status if she got her green card from her US American daughter, for example. If you do not have any derivative option, she will have to file for you, and this might take 5-6 years depending on visa availability and your country of birth. I would need more facts for a better answer. However, I hope this helps and puts you on the right track.
Answered on Jun 06th, 2011 at 3:31 PM