You are his best friend Scott’s sister, ever since your brother came home late they both have been acting weird and not telling you anything so one day when stiles and your brother are talking you enter Scott’s room and say “I know you guys are keeping a secret from me spill the beans and tell me what it is now” you say calmly as stiles then says “your brother’s a werewolf” Scott then says “Stiles I told you not to tell her!” you then look at them dumbfounded and say “what?”