So this all goes back like two years ago when I was 17 it was April 2010 I remember it being a week before spring break so some friends and I crossed the street from school and there's this apartment complex right next to the highschool ( I was still in highschool at the time) so my friends and I would go there once a week and smoke cigarettes during school normally before the last class and I was unfortunate enough once to have one of her friends drive by without me noticing and he told her he saw me smoking and she used it against me for a few months. She would blackmail me with that. A few months after she.found my stash and threated to tell my parents if I didn't cover for her cause she was staying out late and it pissed me off cause she used it against me for like four months and this one day I come home from work and I noticed that my stash had been raided and my sister comes up behind me and apperantly she had smoked most of my weed. Like she only left .5 gram and she stole/ smoked the rest. I didn't mind that even though she took the rest of what I had which was a fresh eighth that I was saving for an occasion. Well after that I was nice enough to smoke her out Nd even give her some of my weed from time to time. Until last year she swore she hated pot and didn't want nothing to do with it so for like most of last year she was a total bitch to me. She would talk shit to me in front of her friends calling me a junkie, a drug addict, while she too smoked pot. And she swears she never smoked it when her friends ask her. If she sees me smoking a bowl she will bitch fo me until she gets tired of it. Or if I have a few drinks which I do once in a blue moon she will bitch at me calling me an addict or a drunk etc... But she thinks she can come home falling down drunk which she has done A fewtimes once she came home at 2 am I was just home alone with my younger bro watching tv and she was totally shitfaced and she just started talking shit and insulting me and my bro my bro and I were just chilling and we were enjoying ur high until she came. Well the next day we talked to her Bout it but instead of saying sorry or admitting she fucked up she just gave us more shit. So much more has happened especially this week and I'm overly fed up with her. My bro and I cant stand her, and she's my SIS and I love her no matter what but my bro and I are fed up any advice?