You can't help her ... directly.
She should consult with an immigration attorney to discuss whether or not her mother can help.
PROFESSOR OF IMMIGRATION LAW for over 10 years -- This blog posting is offered for informational purposes only. It does not constitute an attorney-client relationship. Also, keep in mind that this is an INTERNET BLOG. You should not rely on anything you read here to make decisions which impact on your life. Meet with an attorney, via Skype, or in person, to obtain competent personal and professional guidance.
I have changed your practice category to Immigration. First and foremost do not discuss this fact situation online or with anyone again, except in a confidential setting with your immigration lawyer. You have a delicate situation. Her mother is a USC and can petition for her, and when she arrives, you can have a marriage ceremony in the US. I expect other immigration attorneys will now suggest alternatives as well.
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