The short answer to that is no. A grandparent who takes on guardianship is not obligated to financially support the child. Technically, the parent is still legally responsible for that, so no, a third party cannot sue a grandparent to pay child support.
Mary Ann Burmester is a family lawyer practicing in Albuquerque, New Mexico and has more than 25 years of experience in family law. To learn more about Mary and her firm, NM Divorce & Custody Law LLC, visit www.nmdivorcecustody.com.