One last thing- she doesn't want to go no contact...she wants you to apologize and beg her to forgive you. Again, that's the mental illness aspect of this. I would advise you to resist that temptation to say whatever she wants just to "fix things", because it's not actually fixing anything. It's being manipulated and it makes the situation even worse over time.
I agree with this 100%. My adult BPD stepdaughter would threaten no contact and storm off continually, not because she needed space or time to figure things out on her own, but merely to punish her parents with her absence whenever she felt aggrieved or didn't get her way. The more you "beg" her to resume contact, the more you encourage this sort of reaction.
And my opinion is, as your daughter is an adult, she needs to have her own Amazon account. Take her off your account. Then you can buy whatever you want without risking triggering her. Buying anything fun could be triggering to her, because she feels entitled to your disposable income, and she also feels "excluded." The less she knows about your personal purchases and finances, the better in my opinion. My other opinion is that she should come off your phone plan and any streaming plans, if she hasn't already. A personal phone and Netflix are luxuries, not necessities, and my opinion is that she needs to start being responsible for some of her expenses, if she isn't already.
As for blow-ups at vacations, that's very typical. I think it happens because a pwBPD can't stand to see others' happiness, when she's so miserable inside. In addition, attention might temporarily be diverted away from her. She can't stand not being the center of attention, "competing" with joyful conversations or activities. She can't stand hearing other people's cheerful updates, as she feels inferior and excluded. My solution to this problem has generally been to invite my pwBPD to family gatherings, but make attendance strictly optional, as well as provide an opportunity for one-on-one time, which she handles better. This looks like: "We're hosting Thanksgiving for the extended family, and dinner will be served at 5 pm. Of course, if you have other plans, that's OK--we'll have plenty of leftovers. Please feel free to stop by on Friday or Saturday if you like. Your siblings and uncles will be visiting from Wednesday evening through Friday morning, if you want to see them." I know, it sounds pathetic that a pwBPD can't make it through a Thanksgiving dinner with the family, but historically it's worked better to have leftovers just with her, if she decides to visit at all. Sometimes she expresses an intention to visit, but will be a no-show. I've just resigned myself to not expecting much from her, not even a courtesy text to say she's not coming. If she made other plans, great. If she's in a bad mood and doesn't want to come, fine. I think it's better if she doesn't visit at all if she's in a bad mood. I'm not "begging" her to talk with us.


