hi, i need some advice when it comes to my younger sister. first let me start with my situation so you can understand the circumstances. My older brother died in a car crash a year ago and over night I became the oldest, which comes with all the responsibility and making sure they are well and nothing happens to them. My older brother was one of few whom she could talk to and listen to and the main male adult figure in her life, since our father has never been a father, it has been up to myself and my older brother to be (older brother/dad) to our younger sister and brother. Now since his passing i've had to act more and more like a dad rather than a brother, because shes 14 and at an age where shes developing into a young lady and more importantly she's starting to rebel. She doesn't listen to me or our mother, rarely helps around the house and is in an aweful mood most of the time,only to change when she wants something. I often fight with her because she doesn't do anything to contribute to the family(whether taking out the garbage,cleaning her room, being nicer,etc.). I press her to help around the house because after losing our older brother i want us to want to help each other. So as a family we're more together rather than just looking after ourselves. I have tried to talk to her about it but she just shuts be away "your not my father, go away, shut up, %#@&#! you". My mother knows that my sister is difficult but avoids confrontation so we don't fight, because she's already lost a son and doesn't want to fight anymore. Does anyone have any advice, please?