Family beef 🙄 wwyd

I'm so nervous to go to my family Easter brunch later on today. My cousin hates my guts. She has no right to, I did nothing to her. She's the one who talks shit about me and my family on Twitter and Facebook. She's such a miserable human being. Like just sits there with a stank face, no one likes being around her. What would you guys do in this situation? I almost don't want to go but my mom is making me.