Threatening to punch my mom

I feel bad that I really started to lose myself last night. Me and my mom have NEVER had a good relationship. I was a huge daddy's girl and my mom always had this jealousy of me and felt my dad loved me more than her. They were never married so when he died he left EVERYTHING to me. I was 8 when he died so when my mom found out she just became extra cruel. She fat shamed me and fed into my eating disorder. Constantly tried to one up me. She saw me as a competition. The worst thing my mom ever did towards me is I had a boyfriend when I was 16. He was 17. My mom intentionally got him drunk and had sex with him. Then rubbed it in my face. Me and him are friends to this day and there's no bad blood between us because I get he was a teenager and under the influence. But my mom always rubbed that in. I completely cut her off 4 months ago because she was telling my then boyfriend that I was a slut and that I cheated on him when I didn't. She had gone out of her way to ruin my life. I was out drinking with friends and I'll admit. I was drunk. I saw my mom there and went to the upstairs part. One of my friends came up to me and said she ran into my mom and she was looking for me. I got mad bc honestly how dare she. I sent her a message and said "Leave me alone. If I see you I'll punch your fucking teeth out." And I know I shouldn't have said that. My friend took me home because she knew I was drunk and losing control. Well my mom found me on insta and messaged me there today. She said "I was just trying to talk to you but you always have to be dramatic." Not good how I handled things last night but if someone is telling you to leave them alone the way I did why still reach out? Why can't she leave me alone. She clearly doesn't like me. She clearly doesn't love me. So why keep bothering me.

@Brittany my mom is a narcissist who will never get help because she doesn't see anything she does as wrong and will forever do anything to hurt me. She was willing to fuck a minor to hurt me. I've accepted that there are people in this world who simply can't be redeemed or change because in order to change you have to believe what to do is wrong and narcissist don't believe they are wrong