She can but that may be an issue in the future. Why don't you file for her fiancé visa so she can come with the right visa?
This answer is for informational purposes only and should not be construed as legal advice.
She could, but this is not the best way to get a green card. Please see
Mr. Shusterman's (former INS Trial Attorney, 1976-82) response to your question is general in nature, as not all the facts are known to him. You should retain an attorney experienced in immigration law to review all the facts in your case in order to receive advice specific to your case. Mr. Shusterman's statement above does not create an attorney/client relationship.
Yes, your fiancée (not fiancé ) can. However, if she does not leave, there will be an issue with visa fraud. If she wants to live here, do a K-1 fiancé/fiancée visa.
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