Short story about growing up

Task Four I always thought since I was very little that it was only bad families who quarrel with each other. So it has never come to my mind that it was us, my family and I, who were not normal. My sister and I were brought up with “you do what you have been told and do not answer back”. And that has never been a problem, because I thought it was normal, but over my teen years I saw how my friends were arguing with their parents and I knew that they were completely normal people like me.