Diana ' says her ` ` heart is breaking '' for the teacher 's family . Her son , David , has been arrested in the case . The teacher says she is struggling to accept it . Those who know Chism describe him as a quiet but normal teenager who excelled at soccer . Teacher Colleen Ritzer was killed Tuesday .
Diana ' says her ` ` heart is breaking '' for the teacher 's family . Her son , David , has been arrested in the case . The teacher says she is struggling to accept it . Teacher Colleen Ritzer was killed Tuesday .