How do you watch yourself show your upbringing and after that still have your mothers side?

I have a sister in her mid 20s that hates me. I don’t know why. I have never hurt her. Even when we were kids I never beat the shit out of her like I did with my brother. I don’t know what’s wrong with her. It goes so far that she lies to my parents about me. She is a devil!! She is the daughter of the devil!! <br><br>My parents don’t believe her but they also never said anything to her. I really don’t understand why they act so indifferent. Do they want me to do something about her? <br><br>My brother hates me too. I don’t know the cause of that. But he is better than the devil!! <br><br>I love my parents and I won’t leave them. But where are the boundaries? I never talk to my sister. Sometimes she calls me when she is highly irritated. I don’t know why. She tells me how much she hates me and that I should die. She never did anything to help me. I’m so confused. And I also don’t understand why my parents won’t talk to her.<br><br>Another thing is that I am not my parents’ favorite. I don’t know why. I’m the best son they could ask for. I was always there for them and I did a lot for them. It goes so far that I was forced to do sports with my sister. I don’t like sports. But I was forced to do sports with my mother and sister. My sister is a tomboy. I was forced to do sports with them because my sister hates me and my mother hates me to. I really don’t understand them. I did so much for them and they still show me that I’m the least valuable son they have. Yes, I’m adopted. I don’t know why. My sister is their biological daughter. So maybe this is the reason why they hate me. <br><br>I won’t leave them. They are my parents and I will always love them. But I want them to talk with my sister. I don’t care if they show her that they hate me too. I’m not hurt by this. I really don’t understand why they don’t talk to her. I’m sad.