Star_24,
So sorry you’re having to deal with that behaviour, a knife is going too far, and refusing counselling must be very frustrating. But unfortunately very A typical of BPD behaviour.
I’d say it’s good you got the realisation that you/we can’t change a BPD, that’s for them to do. And I think you’re absolutely correct to think about protecting yourself and your immediate family’s against the toxic effects. Had any thoughts on how you’ll do that ?

Oh welcome to the board, as well.