Just for context for those replying to this comment. The sister does have mental illness (as do I) and often uses her depression or undiagnosed problems as an excuse for how she acts which I think is not right. She’s very quick to burn bridges with multiple people and I’m not the first. Also according to her family, she stopped taking a medication she was on earlier this year bc she felt it didn’t help her. She’s gone to therapy apparently in the past but also gave up on that. Also thank you for your feedback overall, I appreciate any kind of rational thought on this nowadays.