In a relationship with John-Henry Pajak, drummer in the Sydney band, The Go Roll Your Bones. They first met at the 2010 Sydney Film Festival.
Sophie was tested for the female lead in Endless Love (2014), a remake of Endless Love (1981) starring Brooke Shields. She and four other actresses flew to Hollywood to meet the director and read opposite Brenton Thwaites, who was considered for the male lead. Neither Sophie or Brenton were cast.