AIO for cutting off contact with my older sister & never intend to make up with her?

Hi, so I have 4 sisters, one older and 3 younger. My older sister is 30, and I’m 26. I’ll call myself sister B throughout the post. Ever since around the age of 16 she started being very mean with me, just saying nasty things like ‘your ugly so no man would want you’, ‘I don’t think you’ll ever find a man to marry’, she also used to physically hit me multiple occasions when we lived in our parents home, including hitting me with a metal bottle which made my nose bleed and still have a scar on my nose to this day. She also kept saying things like ‘after your degree you’ll end up in a call centre’ (she herself worked in a call centre for several years after her law degree). However, I didn’t I managed to get a job in uni admin, straight after my degree. I also got a first class in my degree, whereas she got a 2.1.

Anyway, while living together she’d act like this and when she found a man to marry at 26, and got married at 27, she moved out my parents home. My life did improve. However, after I got married last year, the meanness started again - as after my wedding she created a group chat with all my sisters and mum, however she’d keep getting jealous over little things I’d post on the chat like a picture of a pizza and complain to my mum saying ‘she’s trying to save money for a house that she doesn’t even eat some days so why is sister B posting a picture of food??’ Anyway I got annoyed hearing this from another sister, as in her complaints about my posts on the GC, so I left the chat voluntarily. She left the chat shortly after.

Now recently it was my 26th bday and I never used to get presents while living at home, but this was my first birthday married. Anyway, my in laws got me two cakes and presents and my parents sent me money and gifts for the first time. She recently came over to my parents house, went on my mums phone and went on my WhatsApp chat that I have with my mum - she then had a crying fit over the phone saying she never gets any presents, no one loves her and she’s jealous that I got given presents and cake. After this, I deffo don’t ever want to make up with her considering her behaviour hasn’t changed since she was 16.

AIO by blocking her and acting like she’s dead to me and what are some reasons that she’s like this towards me? I’ve never done anything to her. Some context is, she married a guy without a degree and who’s from a working class family whereas I married an engineer from a wealthy family background.