Made a throwaway for this.

It's a bit of a longer story. Sorry if my english is bad.

I am 18 now and I've been reading TRP for about 7 month now. Started lifting, reading everyday and various other self improvements e.g I started marital arts. Before that, I was the ultimate beta. Also, 1-2 years before that, a girl went to my school, which I got bullied by ME (don't know why anymore) and I feel very bad about it. She came into my friend circle about 9 months ago and as soon as I saw her I got up to her, we talked, I apologized, she said "water under the bridge" and we became friends and are still. However, her sister came with her into the group of friends. She obviously didn't like me, because I bullied her sister.

So in the following weekends she dropped mean comments, pushed me when nobody was looking and stole me drinks and poured them away when nobody was watching. So basically, very childish stuff. And I? I did nothing, I ignored her, I just didn't say a word to her because I was afraid of confrontation. (It just hurts to think how weak I was before TRP)

However, the peak was reached, when I was at a houseparty with this group. I drank to much, vomited in the doorway and then layed down at a couch to sleep. After about an hour this girl came, threw booze in my face and ran away (She was 18 at the time). I got up, ran after her to an other couch where she was sitting and made a heavy mistake. I lost completely control of myself. I screamed and her what her fucking problem was and was completely in rage. And now comes the biggest beta moment of my life: Another member of our group and friend of her walked up to me and said: "If you don't go away from her now I will punch your face in." And I? I turned around and walked away like the biggest pussy. He was in no way stronger than me , we were both pretty average built and big, but I backed down. As I walked away I heard him laughing. Later I saw him and my bully making out with each other.

Around five days later I disovered TRP.

Now, whenever I go out with that group (which consists about 25-30) people I see her again. She doesen't mock me anymore and we don't talk to each other. When I make eye contact, she stares it back or looks down or to side. How to interpret this? Secondly , it bothers me that she views me as a beta because of that night. How to fix this? How can I show her that I am now longer that weak, pathetic excuse of a man I once was and how do I get her to respect me? Also, how to react right was if something like that happens again?

Addional information:

I am 18, she too and she is about 6-7/10 based on looks.