Nina has lived in Portage most of her life. She is the daughter of a retired steel worker. She and her husband Jeremy Rivas have been married over eighteen years, and have two teenage children, Xavier and Mya, both who attend Portage High School.
Nina currently works for Portage Township, Porter County, serving as Chief of Staff since 2011. In 2015, Nina was awarded the "Township Employee of the Year" by the Indiana Township Association. She also successfully completed the ITA Certification Course for Government Finance in 2017.
Nina has owned and operated a small business, Shoreline Promotions since 2007.
Nina has served on numerous boards and committees throughout her career. She currently serves on the Board of Directors for the Portage Township YMCA and the Friends of Portage Township Foundation, Inc., serving as Treasurer. She is a past member of the Board of Directors for the Portage Township Education Foundation and the Twin Creeks Conservancy District. Additionally, Nina was elected as precinct committeeman in May of 2018.