Hi Jai Yen,
Communication post-divorce for me is virtually NC. There is still conflict, and expensive court proceedings, so I don't have personal experience about positive communication experiences to share, but I do think there are communications tools that can be effective with pwBPD and that you might want to experiment with in your situation. My ex is so off-the-hook rage-filled (even 2.5 years later) that we have a court-appointed parenting coordinator involved, and even she cannot communicate with him, and she's an experienced psychologist. But I do think there are less volatile situations out there, and that the tools can be effective. Things like:
Reinforcing good behavior, positive reinforcement Communication tools (SET, PUVAS, DEARMAN)I think you probably have this one under control, since you know how to end angry, emotional Skype sessions, but here's another one about dealing with hostile emails:
TOOLS: Responding to hostile emailGlad to hear your son got in to see a T, and that he is doing well. I had S11 do a personality assessment when he was 8, and the psychologist told me he was "at risk" but also willing to accept help from others. He said that kids who accept help when it is offered to them often do very well. That has certainly been true for S11. He likes seeing his T -- he goes about once every 3 weeks. They have a confidential relationship, so I talk to the T, but she does not disclose much about what S11 talks about. And he knows that, and knows he has a grown up in his life he can really confide in, someone not his mother or father.