Hi damenlost,

I can’t even begin to think what the wBPD fed to her daughters in terms of aligning her turning me black with rationale with her daughters as to why the man that has lived in a family unit is now suddenly out of the picture?
You make perfect sense and I can understand how confusing the behaviours are from a pwBPD, it's not personal to us, it's something that a pwBPD are going through, you can be split black from saying something to a pwBPD, if you said you thought that she was overweight for example. A pwBPD have dichotomous thinking and can't see a person as an integrated whole with both good and bad qualities, so if you do something that they think is bad, a pwBPD doesn't see the good redeeming qualities that you have.
I understand your logic but in that context of black /white thinking, it's destructive because it fails to see all sides of a situation, it's solely focused on one thing.
You can think of it in a different way, a pwBPD only split the people that they care about most.
I had a step daughter, she's my exes first daughter, her father moved away to another Province when she was really young two, so she didn't have a stable parental figure in her life until I came a long but there were issues with her mom, she'd get jealous of our r/s so it caused a lot of discord around the house. I care for her just like my own child and when I was split black, I could only go to court for custody / access for the kids I had with her, not the child that she had in another r/s. It was heartbreaking at the time because I have a strong protective nature, most people do with their own kids but I couldn't extend that to my step daughter. When the r/s was over I didn't have further obligations but I can see in different, more amicable or mainstream circumstances that you could retain a r/s with an ex step child.
I chose to let her go as hard as it was at the time and thought that a r/s with her could be reestablished with her further down the road when she became of of age if she chose too, she had a lot of problems after I left and I'm not a doctor, I can't diagnose but I see BPD traits similar to her mom, but it's in the family too with the women, her mom, grandmother and my ex all have BPD traits so I can see how it was passed down either genetically or environmentally for her. I have shared custody and I try to be a stable role model to counter balance the dramatic and chaotic nature of my exuBPDw's, so far so good they're all happy and seem well adjusted.
What makes you think that the father doesn't know about the other side of his exe's personality? Getting actively inviolées in a triangle has a good chance of back firing. Do you know the father? What is he like?