She has never ever made an actual suicide attempt though and after experiencing her threats several times, it became clear to me that she uses this as a tool or tactic to get what she wants.
That's my theory too and I include my father as well as my sister in this. If I counted all the times my sister made threats(but never followed through) to try to get her way over the years... . well it would be quite a lot. This is especially true if there is a chance it might hurt her baloney public reputation or as she sees it.
Mind you she has gotten worse lately and is now willing to make scenes in restaurants... . where before she would not do that. The line has moved.
At this point it is moot and my Aunt... . who is potentially BPD herself (the NPD/BPD male/female coupling is quite common) is complaining on FB that she is being harassed by my family.
In my sister's case it can be seen as true as she wrote this awful email that just ranted and raved for like 1300 words, but in my case she is being unfair IMHO.
I stepped in only to try and resolve the matter. In the last week I left her two voicemails (5+ days apart), two short FB messages and a single email under 500 words that was pleasant and just asked her to deescalate the situation and delete the posting my sister was going bonkers over.
This will prove to be an interesting test of how crazy, manipulative or plain full of baloney my sister and father are. My aunt did not mention the police showing up at her door today... . so we shall see, but I am going to leave the two drama queen's to their own devices now.