hi golden girl- Wanted to welcome you and thank you for posting.

You have been dealing with this for such a long time! I can understand the meltdown.
I hope your son will do or say something that can help your DD- you must be so worried about her right now. But it's great that she has a place to flee. And that it is with family is even better.
You must be so worried about your GD. How is she coping with all the drama and turmoil?
Give us an idea of what sort of boundaries you want to put into place. Have you done this with your DD before? If so, how did she cope with the boundaries. Was she compliant?
The pwBPD in my life is my SD23. She is doing well right now thanks to some very firm boundaries, thanks to my DH's learning about enmeshment and enabling and thanks to SD's now 3 years of sobriety (and staying with her 12 step program) but her teen years were very difficult so I feel like I can empathize with you. There will be other's here who are even more in the same boat. I hope you will post again.
Thursday