no special visa for GC's

There is a V-visa, but it won't apply in your case. And once she married you, it is just about impossible for her to get any non-immigrant visa, such as F. But a H1 visa may be ok assuming she finds employment in US.

The wait for the spouse of a GC holder is at the minimum 4 years, even if she files the application today. It will probably take you shorter time to get your citizenship.