As a U.S. citizen over the age of 21, you can file a petition for her. If she overstayed her visa or came here illegally, she will need a waiver to overcome her illegal presence in the U.S. I strongly suggest that you contact an experienced immigration attorney for a face-to-face consultation and give him/her all of the facts surrounding your mother's situation. (S)he would then be in a better position to analyze your case, advise you of your options and, if possible, make sure that the necessary paperwork and documentation is properly presented so as not to delay the process.
Answered on Jun 01st, 2015 at 3:36 AM