My m27, sister "Jane" f29 had always had a strained relationship with our parents. The conflict that led to them not speaking to each others for a long time is because they told her ex fiancee about a pre-existing medical condition she had. This ruined the relationship and Jane went low to no contact.
She met her now husband and their wedding took place 2 weeks ago. The problem was that she did not invite our parents although she reconciled with them but she said it's her wish. Our parents reacted negatively and there was sk much arguing to the point where Jane told them to either drop it or she'd cut them off. This grieved our parents a lot. As well as other relatives but none of them wanted to tell them where the wedding is except me. I did it after my parents cried and said that they didn't wanna miss a once in a life opportunity to see Jane get married. I gave them the address and thought that Jane's heart might soften when she saw them. But instead, she went nuts and there was a blow up at the wedding. Although our parents were nice they were still kicked out of the place.
Later Jane chewed me out for what I did and claimed I ruined her wedding. Her new husband told me to leave which I thought an overreaction because mainly, our parents really cared enough to come and didn't wanna miss the chance.
Since then, Jane hasn't been answering my calls and her new husband keeps saying that I messed up and potentially ruined our relationship.