Your question is a little confusing and some of this will depend upon her immigration status. You should meet with a CPA to determine the best filing status.
This answer is based on general legal principles only and is not intended to provide specific legal advice. This answer is for informational purposes only and does not constitute the formation of a lawyer-client relationship. Any reader of this answer should not make decisions based upon in without first directly consulting with an attorney
A husband and wife can file their tax returns separately. I think that answers your question.
I hope this helps!
Steven A. Leahy
Please note that the above is not intended as legal advice, it is for educational purposes only. No attorney-client relationship is created or is intended to be created hereby. You should contact a local attorney to discuss and to obtain legal advice.
You can file separately, but it is not always financially advantageous to do so. Figure it out both ways and see which gets you the larger return.
The above is meant to be instructional and does not create an attorney client relationship. Please call for a free consultation if you would like to discuss the matter.