how she was merely disciplining the girl for not doing her duty , how shocked and distressed she was to be assaulted by me and treated most cruelly-at this mistress glances over at the nail marks on my cheek and the teeth marks on my arm-how someone like me , so lowborn , a common a gutter girl that should n't even be in this school , how her father will certainly be told of this incident and- here mistress cuts her off with a sharp slap of her rod on the desktop .