If you are married and living together you should file together. Why would you exclude her?
Samuel Ouya Maina, Esq. 415.391.6612 email@example.com Law Offices of S. Ouya Maina, PC 332 Pine Street, Suite 707 San Francisco, CA 94104
The law requires you to file jointly unless you have a good reason not to. Also, if your wife only has a conditional green card, not filing jointly now may create an issue relating to the bona fide nature of your marriage when the time comes for her to remove the condition.