How do you know when your relationship with your BPD girlfriend is over or if it is just a longer rage?

djg3665
I have been with my BPD fiance for a few years and I am not exactly sure if I am in a relationship anymore. She ends the relationship about 3 of 4 times a week and blocks me, I don't pay attention to it and just talk to her through another means an hour later and everything is fine. This time is different because it has been a week and she is still raging at me every day and saying it is over.
I have been in a devaluation stage for the last month; there is nothing that I could do right like her saying that she didn't have enough money for food, I sent food and had it delivered, but it was not what she wanted and threw everything away. She was sick and doesn't have insurance, I sent money to pay for the tests. She used the money to help her mom since both are out of work because of COVID-19. I sent again, and she did the same thing and I said I wasn't going to pay a third time. She then said that I don't care about her health and how terrible of a person I am. She then lost her cell phone, I told her that I would help her get a 2nd hand phone since this is the 5th one this year, now I am the man who doesn't treat her like others treat their girlfriends.
Her friend contacted me asking if I talked to her since she hasn't heard from her in several days, said that she was raging at her for no reason. I said that I have been trying to get her therapy for a while because I have been experiencing the same thing. My fiance then said that I was cheating on her with her friend, and ended the relationship. It has now been a week and she is still raging at me and saying we are over which is different. I tried to explain with logic that I live 2000 miles away from her friend and the country doesn't allow foreigners to enter because of COVID, therefore it is impossible to cheat. She keeps saying I cheated every day which frankly, I wish that I did so everything made sense.

Can anyone share their BPD experience and what you did or would do in this case?
How do you know when your relationship with your BPD girlfriend is over or if it is just a longer rage?
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