Sofia has already been punished at home after being punished at school but now Sarah is going to deal with the actual event that led to the punishment. It seems that Sofia gave a powerful laxative to another girl with disastrous results. This calls for a hairbrush spanking with the Mason & Pierson hair brush. This implement is well known for inflicting the maximum amount of pain to naughty girls bottoms with the least effort from the spanker. You will see the obvious dislike that Sofia soon shows for this punishment.