Thornton was born in College Station, Texas. She is an alumnus of Texas A&M University, where she sang the national anthem at a number of sporting events. She is a Christian. In December 2009, Thornton became engaged to her boyfriend, Christopher Carney, a probation officer and former lead singer of the band The Prom Kings. The couple was married on November 12, 2011 at Garvan Woodland Gardens, in Hot Springs National Park in Hot Springs, Arkansas. Sonny with a Chance co-star and singer Demi Lovato served as one of the bridesmaids. On February 13, 2012, Thornton announced that she was pregnant with their first child. The couple welcomed their son, Kenneth James Carney, on August 14, 2012. The child's godmother is actress Cassie Scerbo. On October 25, 2013, Thornton announced that she was pregnant with her second child. They welcomed their second son, Bentley Cash, on March 1, 2014. Thornton and Carney separated shortly after the birth of their second son. In May 2014, Thornton's husband accused her of abducting their two sons. On September 21, 2014, it was announced that they got back together.