Tatiana wrote to her mother on 8 March 1910 , that she was `` so afr ( aid ) that S.I. ( governess Sofia Ivanovna Tyutcheva ) can our friend something bad '' . `` I am so afr ( aid ) that S.I. ( governess Sofia Ivanovna Tyutcheva ) can speak ... about our friend something bad , '' Anastasia 's twelve-year-old sister Tatiana wrote to their mother on March 8 , 1910 .