Original: (https://www.reddit.com/r/AmIOverreacting/s/U3Nl42gaxa)

Hey guys it's me again, I have some updates and I'm not sure how to feel right now and I'm really upset. My sister "Ivy"'s best friend "Stacy" just messaged me and I'm really upset because I'm not sure what to do about this. My sister has apologized to me about the way she reacted and said no one showed up to her party on Sunday (I was told some of my family went) and she actually ended up calling me at work about it since she texted me after I clocked in.

My job is very time consuming and needs all of my attention as it's a lot of numbers and names, it upset me that she called me at work because I couldn't answer, I told her on the phone that I wasn't sure if I can go to her new party because of a previous plan with my Boyfriend's (Fake name but Zach) mom. I told her that I'm going to my parents Easter get together since the whole family is going to be there and I thought she would be since that's what she told my step mom.

She said she might not go and we were talking about meeting up for dinner sometime but then I got this message from her best friend Stacy?? (She's known this girl for years but only started talking again in the last 2-3 years then they became roommates)

I'm really confused because I'm not sure what to do, how to respond, I'm not sure if I'm being a bad sibling here or what. I'd love any advice and I can answer any questions if needed. Please check out my previous post for other context.

Am I overreacting or the asshole about this seeming really weird? I really need some outside prospectives here.

(Imgur link to all the texts since it's multiple messages. https://imgur.com/a/08IY5NG)