Hi frankfurt22, are you looking on behalf of a sibling? Mother? Or is this your own child?
Here's one resource on the site that may be helpful:
https://bpdfamily.com/message_board/index.php?topic=114267.msg12588412#msg12588412Does your pwBPD have substance abuse issues? If so, dual diagnosis treatment centers might be better.
Researchers tend to treat success in terms of managing suicidal ideation and self-harm. What are the primary challenges your pwBPD is experiencing, or is this something you're hoping you can convince them to do?