I keep trying to guide her and my parents for their good, but they feel like I am their enemy. I completely get the situation but such things are making me feel the psychological impact on my mental health.
What should I do to continue to help...?
Welcome !
So... Drawing from my own experience, when I was detached from BPD mother and living my life, she would, on purpose it often seemed, create drama into her own life to reel me closer.
I have been taught, from a young age, that she needed saving. My brothers have the chance to "stay" in rescuer mode. In my case though, she ensures I rescue her, and then she splits me and act as if I am persecuting her...
So the best way forward for me, for my health, ended up to stop helping. I do the same with my brother, who I suspect also has BPD.
He will tell me all about his issues and I will simply ask questions like : how does that make you feel? I am sorry to hear that, what are you going to do about it, any idea?
But I never, anymore, provide answers and solutions. He is not my responsibility, he is a grown man. Emotional detachment is key.
You will see the Karpman Triangle mentioned often here and if you go under Ressources, you can read more on it. Steer clear of the drama for your well being, as much as you can...