Thank you Surnia,
Thank you for your empathy and understanding. Yes, its a tough situation to be in. I want to share resources and help with my parents but they have to be ready for it and I don't find them to be. I do understand that it is easier for me to accept the situation than it would be for them. For parents they could easily see themselves have having done something to cause this in my sister. So I understand how blame and guilt could pose a harder time of true acceptance.
Now that I've analyzed my parents behavior over the years I wonder if its the reaction to my sisters problems with BPD and their constant trying to protect her, cover for her, and deny. They've changed over the years from seemingly easier going and fun loving, to worrisome, fearful and often passive agressive, at least in my observation. Understandably, some of this results from my Dad's health deteriorating. But I've read how people start to believe some of the distortions that BPDs have, if they keep throwing them at you... . and it seems that some of their outlooks on me or other people are very in line with things that my sister rages about. This makes it hard not to walk on eggshells around my own parents!
As far as I know my sister hasn't been officially diagnosed. However, she has seen a psychologist off and on (she's off now). My parents apparently went to see a psychologist to know more about what it is that my sister is going through. I don't know if the psychologist gave her BPD the label or not. However, I'm pretty comfortable labeling her condition as such and I've needed to in order to find help and take care of myself within this chaos. I'm not around it much so I can't imagine what my parents must go through.
I do have 2 other siblings besides my sister. I am the oldest, I have a brother who is just 1 1/2 years younger and then another brother who is 9 years younger. My sister is 11 years younger. The brother just older than her received a lot of attention when he was little ... pretty much monopolized the attention. I don't know if she felt abandoned in that or exactly what was going on. My other brother and I are like two separate families with so many years in the gap between us and the younger ones.
My sister got outraged at my Dad a few years ago when she was going through her second divorce (and lived close to my parents). She wrote a scathing letter to him, telling him that now he'd be rid of the problem in his life (her) ... . and then she proceeded a "suicide attempt" by swallowing a bunch of pills and drinking alcohol. Apparently it was her husband that found her asleep with the note. My parents were notified but the police or hospital were never called. ... . I know they are afraid she'd lose her job, so being in the real treatment she needs has never happened. This is a bit outrageous in my mind too. I'd have called the police in a second... . not because I want her to lose her job, but because I'd be more concerned for her life. I attribute the non action as more denial?
I know I'm venting a lot and I appreciate your ears. It helps just this out and my feelings about it. Thank you for this forum. I'm glad I found it too!
I will check out the video now

thanks!