Worried please help sorry if its long but help!!!

Ok, so if you have read one of my questions that is called ‘I have a beetchy best friend’, well, me and her are not friends anymore, and when we were we told eachother who we like and I told her I like this one guy, and she told me that she likes my brother but I was okay with it because every girl seems to like my brother. Anyways so she knew a lot about the boy I like and I knew my brother so over the phone we did this note taking thing to see if we and he had a lot in common because we were bored like we did questions like what is his favorite color, blahblahblah. Anyways she came up with the idea and one time we were in this summer program(this year) and her parents needed to work so she came to my house monday thru wednesday and one day we came home and I was so tired(I went to a wedding and didnt come home til 1 or 2 iin the morning) so I just dropped my stuff and lay down on my sisters bed while my friend sat on mine like always and then I completely pass out and im a heavy sleeper too. So I wake up and my sister was on her laptop telling me that my friend went home.then my cellphone rings and it was her and she asked me ‘hey is it true you told your sister that you were going out with him?’ and I was confused as f because I didnt tell my sister s and I m all thinkin how would my sister know his name??? So I asked her ‘what did she say???’ the she says that my sister asked ‘so how is he and vivi doing as boyfriend and girlfriend?’ and I wanted to flip out so fing bad!!! How could my sister know who my crush is??? I didnt tell her s because I honestly can’t trust my sister on secrets. I wouldnt lie about having my crush as a boyfriend because thats the level of a stalker and thats crazy to lie about a date!!! But when she asked me if it was true I got surprised but then I thought why is she taking this lie personal if she went around the whole school saying that she was going out with my brother? And then she tells me that she and my sister were talking while I was dead asleep and they were going through my phone and I use my phone like my little diary sometimes I use the notepad to write down my thoughts and one of them was saying that I wanted to kill myself (which was stupid but I was mad that time) and she tells me I can go to hell for that and all that s so I freak out because they were going through my personal stuff while I was asleep and helpless!!! So later on in jube we have this fight because she was callijng me stuck up and talking s about my family so I call her a b and she says ‘better a b than someone who has to lie about a date!’ and thats what pissed me off! So I tell her what she did going around the whole school and sh said thats nothing compared to what I did. Are you kidding me?! I didnt say that I went out with him at all and now im worried because school starts on the 3rd of fing august and im going to be a frersman and I’m sting my pants here thinking that shes going to tell him what I didnt do!!! Heeelllppp!!! Sorry if its long!!!