Yes, she could likely face issues and have difficulty being readmitted on a tourist visa next time she attempts to come back. By simply leaving while her application was pending with USCIS she in effect "abandoned" her application, and accumulated "unlawful presence" from the day her I-94 expired; her visa got cancelled by operation of law as a result.
Behar Intl. Counsel 619.234.5962 Kindly be advised that the answer above is only general in nature cannot be construed as legal advice, given that not enough facts are known. It is your responsibility to retain a lawyer to analyze the facts specific to your particular situation in order to give you specific advice. Specific answers will require cognizance of all pertinent facts about your case. Any answers offered on Avvo are of a general nature only, and are not meant to create an attorney-client relationship.
Good for the visitor.
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Have her carry all the paperwork the next time she travels to the U.S. to visit you.
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