high school things following you to college

I thought joining a sorority in college would be an absolute new and refreshing experience and would give me better times than high school and it has for the most part. However, I got into the same sorority as an older girl who picked on me on high school and I feel like her old tendencies are coming back... i’m coincidentally close friends with her g-little and sometimes she come to the house for lunch during times my friends and I are there for lunch and she just keeps on making subtle jabs at me and casually referencing times in high school in light of the fact those were instances of her picking on me and it’s starting to get annoying. Anyone else have older girls on their house who they knew previously that won’t leave them alone?