mrgoodstuff
Master Don Juan
I have said it multiple times on this forum... Stop thinking that people with mental illness are rational. Stop applying your rational and logical notions to them. You cannot understand the illogical by looking at logically.
There is no cure for insanity... You cannot help her, in fact you being around her makes her condition worse. Believe me, you being with her reinforces her delusions and feeds and amplifies the disorder. Let me explain... The emotional swings of a relationship are not good for somebody with Cluster B, it loosens our grip on what little control of our psyche and behavior that we could possibly have. Furthermore, you being with her reinforces the idea that she is ok and that she is not delusional and you also provide a distraction for her thinking about herself. This is not good, the only way she will heal is if she is focused on herself and her problems. When the only thing left to blame is herself...
The BEST thing you can do for her and for yourself is to stay away from her. Take confort in knowing that by doing this you are actually helping her more than you could if you were with her.
Her story was a fabrication that she created to try and control you. People with cluster B lie all the time, in fact it may sound absurd to a rational person like you but sometimes Cluster B people believe in the lie so much that their entire perception is altered. They can literally take polygraphs, blatantly lie on it, and come out negative because they actually BELIEVE their fiction truly happened. She was doing it because her condition, BPD, includes fears of abandonment. Her mind fabricated that absurd story out of her unconscious fears of abandonment.
Even if you don't give her mood swings, giving her a "good" relationship or feeding her "good" when she is being BPD is not good for her. It's not good to support or prop them up, they need to work those demons out on their own. Enabling them makes them much worse.