Hi there ladies,
Putting aside the volatile emotions and victim perspective of BPD for a moment, I've observed that BPD often involves unrealistic expectations. Sometimes I think it's as if pwBPD live in a fantasy world, with a heavy dose of childish, "magical" thinking--believing that they should command everyone's attention, and that others should cater to their every need, without regard for other people's circumstances. Their conception of an interpersonal relationship is too demanding, too INTENSE. An example might be that the pwBPD believes that close relatives should always remain "available" to her--to talk, to entertain, to give her money, to help with logistics, to solve daily problems or take her on vacations. Another example might be that she expects parents to spend all their disposable income on the adult BPD child, because they "owe" her. She might have the expectation that the childhood home should never change, and that family members should never move away, let alone marry (or remarry), or devote time to their own families. Another expectation might be for a Prince Charming to knock on her door, sweep her off her feet and set her up in a palatial home, where she has no responsibilities for upkeep or income contribution. Since these expectations are unrealistic, childish and partly delusional, the pwBPD feels constantly disappointed and aggrieved. And so she might lash out, accusing you of "abandoning" her, not helping her, not catering to her every need like she was used to in the past. She'll say you're a terrible person, selfish, narcissistic--and that your life and home are horrendous, your friends are evil, that you should be punished and rot in hell . . . and maybe she'll threaten you too. Immediately after that she'll try to "punish" you by cutting off all conntact. I think this is a reflection of her childish expectations that set her up for constant disappointment, which leads to petulance, tantrums, rages, threats and/or bouts of depression. On top of that, she's seething mad when others seem happy and hit life's milestones, because it's a stark reminder to her that she is not happy nor hitting milestones. It's almost as if she's stuck, while others close to her are moving on, and she's not happy about that.
Look, nothing you do will change your sister. The only person you have control of is YOU. I'd say, if your sister is ripping apart your sanity, then you deserve a break from her. You don't have to explain anything to anybody, just take a break. I'd say, let her calls go to voicemail, and don't listen to any messages if you can't handle them right now. You don't have to read her texts or emails, either. If something were truly important, trust me, you would find out some other way (for example, your parents or other family members would reach out to you). And if you're worried about what your sister is saying about you behind your back, I'd say, try to stop worrying about that. Your family already knows your sister has her issues. My guess is that they already know she's prone to lying (or extreme exaggeration). You do NOT have to defend yourself. I'd say, try to focus on YOU. Get busy with your life, so that your disordered sister doesn't occupy so much headspace.


