Thank you for your patience.
I would suggest you write a statement to USCIS and describe the marriage fraud that she engaged in by abandoning you to live with another man.
If you have any evidence of her being with another man, include that.
You can make an appointment with the InfoPass desk at your local field office by going to this link bring with you your statement and include her name, date and place of birth and her immigration file A# ***** you have it. Also include your name date of birth and place of birth.
I would suggest you take with you two copies of your letter and evidence and have the immigration officer who takes your statement stamp your copy as filed.
Doing this will release you of your liability under the affidavit of support and cause her 485 based on your marriage to be denied.
I am eager to make this a positive experience for you. Please ask follow-up questions if my answer is not clear.
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