In 2011 during Sonnett's junior season, Fellowship Christian's varsity girls soccer team reached the Final Four of the Class A state tournament, losing 0–2 to the eventual state champions, First Presbyterian Day School, in the semi-final.[9][10] The following year, Fellowship Christian, with Sonnett as captain, reached the 2012 Georgia state championship game and again faced First Presbyterian Day School ultimately losing 0–1.[9][10] Sonnett ended her career at Fellowship Christian as the school's leading scorer with 113 goals and 41 assists.[3]