I agree with both Max and Horselover on this. But still, the major books on BPD all mention not enabling. Perhaps it's a mixed result. However perhaps some pwBPD are resistant to any intervention. The thing is- one doesn't know until they tried and it seems both of you have tried. It must have worked for some people or it wouldn't be suggested.
Nothing anyone did ever changed my BPD mother. I wondered if it was because there wasn't therapy for BPD available in her younger years, or if BPD wasn't a known thing yet, or due to my father's enabling.
So why is it that some people choose to stay and keep the current dynamic and others don't, or leave? I don't know that either. I don't mean this to be critical but the "stuck" seems to apply to both partners in that, nothing also changes their mind about staying the course- not the pwBPD's behavior, not advice, and not counseling.
When I left home for college, I knew there were issues with my mother but I had no real clue about all that was going on. I also didn't go home again, except for school breaks, holidays, visits. BPD mother could hold it together for shorter times. I had no idea.
But then, in his elder years, my father got ill and could not keep up his level of enabling. As one might predict, BPD mother's behavior escalated. I walked into this with intentions of helping- from a non dysfunctional perspective of what I thought things would be, and did not expect the emotional whirlwind it was.
But nothing I could do would make any difference for either of them. It was going to go the way it went. I did find the information on boundaries and not enabling to be helpful to me, personally. But again, it's a personal choice.



.) Cc43, what you say about a victim narrative resonates here.