After they marry, you will need to file an adjustment package. This includes the following forms: I-130 (Petition for family member), I-485 (application for Lawful Permanent Residency), I-765 (Application for work permit), I-131 (Application for Advance Parole), G-325a (Biographic data - one for each of them), I-693 (Medical exam that a certified doctor must fill), and I-864 (Affidavit of support). They will need to file each form with supporting evidence and appropriate filing fees. You can find these forms at www.uscis.gov/forms.
The supporting evidence that they would file would be birth certificates, marriage certificate, divorce certificates if either of then have been married previously, proof of his U.S. Citizenship, proof of her legal entry into the U.S., and financial documents of his to prove his income over the last year at least.
In about 3 to 5 months after filing, she should get a work permit and Advance Parole (that will allow her to travel). About 5 to 7 months after filing they should get a marriage interview. If all goes well, a few weeks later she should get a Residency status (green card).
She should not travel until she has the Advance Parole approved and in hand which as I said can take 3 to 5 months. If she wants to try to expedite it, here is a link:
Please let me know if you have additional questions and please do not forget to rate my service to you (not the state of the law) as that is the only way that I can get credit for my assistance to you. Even after you rate the service, I can still answer additional questions for you without additional charge. If you do rate me positively, a bonus is always appreciated. If you would like to request me in the future, just go to http://www.justanswer.com/law/expert-guillermosenmartin/ and make sure you type: FOR GUILLERMO on the subject line. Thank you!
DISCLAIMER: Answers from Experts on JustAnswer are not substitutes for the advice of an attorney. JustAnswer is a public forum and questions and responses are not private or confidential or protected by the attorney-client privilege. The Expert above is not your attorney, and the response above is not legal advice. You should not read this response to propose specific action or address specific circumstances, but only to give you a sense of general principles of law that might affect the situation you describe. Application of these general principles to particular circumstances must be done by a lawyer who has spoken with you in confidence, learned all relevant information, and explored various options. Before acting on these general principles, you should hire a lawyer licensed to practice law in the jurisdiction to which your question pertains.
The responses above are from individual Experts, not JustAnswer. The site and services are provided “as is”. To view the verified credential of an Expert, click on the “Verified” symbol in the Expert’s profile. This site is not for emergency questions which should be directed immediately by telephone or in-person to qualified professionals. Please carefully read the Terms of Service (last updated February 8, 2012).