Sisters3
Let me join LivedandLearned and welcome you here
This is a place where we can share our stories and find support from people who have been in similar situations. It sounds like you are quite frustrated with the current state of affairs. What is is about her that makes her disruptive?
You mentioned she has had BPD for 35 years. Was she professionally diagnosed?
I'm including a link here. It is a forum or board where people with family members, siblings etc with BPD can post their experiences
https://bpdfamily.com/message_board/index.php?board=7.0I'm so glad you came to our site. It really is a place to be supported while we are going through this rollercoaster ride of BPD. Looking forward to hearing from you again