There was a whole dynamic like that in my family I disengaged from. It was mother/aunt/sisters/me. My husband called it the Game of Phones

Now I speak much less to all of them, and not to one sister at all (whom I thought I was very close with). When they start talking smack, I grunt an ‘uh huh’ or remain silent. And I don’t say anything negative about anyone anymore either. I was feeding into it previously, I was part of the problem. Now it’s just a lot quieter with no one to talk to, but it’s better.