You don't know what can you do ... mmm... Well, Backfire !!! Fight !!! but in a wiser way : accepting her and without judging. If she enjoys making your life miserable when she notices there's no result, eventually, she will stop. But you are going to do this ( be a loving person) not for her, but for you ! After all, love will make you feel so much better. (I can bet my head on this one ^^ ) Don't pay attention, whatever she does belongs to her and says nothing about you! (;

You said "I don't know what can I do for her" ... Why do you have to do something for her, live your life and let her live her's... if she needs she will come to you, if you chase her you will push her away

you are so lucky to have a sister even if you both face some difficulties in your relationship. i envy you" i'm sorry " but i have no sisters but 5 brothers you know being 1 girl among 5 boys sometimes makes me feel lonely . most of my time i act just like them ,i don't know what to say. any way you may have done something upset her just give her a short time to clear her mind.

This is called sibling rivalry. Often sisters and brothers fight with one another because they feel that their parents favour one child more than another. Your sister has the upper hand. Try not to play her emotional games with you and live your own life.

oh my god! i don't think sisters hate eachother maybe my sister doesn't understand me sometimes, but hates me, no way