Hello again and welcome back. Thank you for requesting me. Fortunately, there is no blood relationship, so there would be no legal problem for you to marry.
After you 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), G-325a (Biographic data - one for each of you), I-693 (Medical exam that a certified doctor must fill), and I-864 (Affidavit of support). You 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 you would file would be birth certificates, marriage certificate, divorce certificates if either of you have been married previously, proof of your U.S. Citizenship, proof of your spouse's legal entry into the U.S., and financial documents to prove your income over the last year at least.
In about 3 to 5 months after filing, she should get a work permit. About 5 to 7 months after filing you should get a marriage interview. If all goes well, a few weeks later she should get a Residency status (green card).
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