If she wasn't in lawful student visa status, then she must try to avoid unlawful presence which begins to count after her 18th birthday. If she stays more than 180 days over her 18th birthday, then she can be banned from entering the U. S. for at least 3 years. I strongly recommend an appointment with a competent and experienced immigration attorney as soon as possible. Good luck.
Consumers can use this platform to pose legal questions to real lawyers and receive free insights.
Participating legal professionals get the opportunity to speak directly with people who may need their services, as well as enhance their standing in the Lawyers.com community.