Sad? Unhappy?

Hello everyone! This week is not such a good week for me :( Im so sad and unhappy ,this day I keep getthing scold by my friends infront of alot of people in school, and her scolding is so loud! one of my friend wants to her scold her back because she scold at me so loudly, but she was afraid to cause there is teacher. I didn't do anything to her , I just mistook her word and then she scold at me, I was so sad I want to cry but I smile instead and never scold her back,I just sit there quietly and do what Im doing then she continue to talk to other people.She is someone you need to be carefull when talk to her and makes joke with her , sometimes she is not in a good mood or she forgot to do her homework and we talk to her in the end we get scold by her! When we were not in a good mood or maybe we forgot to do homework and then she came to talk to us but.... we never scold her. She is someone who only thinks about her self but she wont think about other people feeling ,she scold other people like everyday!(well excepted when it start at  Friday 12:00 pm - Saturday night i will be in a gread mood cause i wont be scold by her again.Ahh what to do to let her change her attitude?! alot of my friend been complanning about her...well anyway I'll stop here its gething late good night readers!