Sibling with ubpd suddenly being nice after a period of excoriation and low contact.
Hi there,
In my experience, this is extremely typical of the BPD push-pull, rage-isolate-reconnect cycle. Let me guess: your sibling had a meltdown, where she put you down and/or blamed you, when you did nothing to deserve it. Even if there were a kernel of truth to what your sibling accused you of, she wildly distorted the fact pattern and made you out to be a villian. Then she cut contact, possibly to punish you, and also to give you no opportunity to defend yourself.
My guess is that your sibling knows what she did was wrong and feels ashamed about it. But with the passage of time, she felt compelled to reach out to you again--maybe to ask you to do something for her, maybe to feel less alone, whatever. A "normal" person would probably apologize and try to make things better. But your sibling isn't normal; her sense of shame is unbearable. Besides, she has to maintain her running narrative of feeling victimized, at all costs. What does she do? She pretends like nothing happened, in the hopes that you will forget . . . and that you won't mention how she acted poorly, let alone hurt you in the process. You see, in her world, there's no room for accepting any blame or dealing with other people's feelings. So she's just pretending right now.
Is she trying to butter you up for something? Possibly. But maybe she's just trying to be nice. Maybe there's a temporary lull in the pressures of her life for the moment. The pwBPD in my life would seem to be fine whenever she was "in between" obligations, such as on a summer vacation. Without the burdens of working, school, schedules or much of anything, she was relaxed and not under pressure, and she could actually be nice for a week or two--provided she was allowed to sleep in as late as she wanted, she could do whatever she wanted, and her family provided for her 100%. But all that could fall apart in an instant, the second she had any responsibilities, didn't get her way, needed money, or found out about good news from a family member which made her writhe with jealousy. With the pressure of real life, unmet expectations and constant disappointment, she'd act out again.