It appears your wife is eligible to file for naturalization. She should file as soon as possible. You cannot help your mother-in-law to become a lawful permanent resident. You wirfe could petition for her mother to receive an immigrant visa once she becomes a United States citizen. Your mother-in-law could concurrently seek adjustment of status based upon this immigrant visa petition. You can read more about family-based immigration at http://myattorneyusa.com/immigration-law-and-practice/immigration-to-the-usa/family-immigration.
Answered on Nov 13th, 2015 at 11:35 AM