hey, thecodependent1, and welcome to the family.
you might have also noticed from that show that interventions are very risky. an unstable person may feel cornered, persecuted; its a pretty harsh spotlight on a lot of shame. in other words, it can seriously backfire, and i dont think i would encourage it in dealing with a loved one with BPD.
we have more information and discussion on the topic here:
https://bpdfamily.com/message_board/index.php?topic=76633.0