Pushing people away like that sounds like typical BPD behavior.
Painting you black, pushing you away, and finding somebody new (who is idealized, mirrored, and painted white) is a possibility, there's no way to know for sure.
That she's pushing everybody else away at the same time would make me guess not.
She told me shes distant because she doesnt want a relationship as she is a terrible person but i find that very hard to beleive.
That's very believable... .and a (relatively) good sign. Most pwBPD believe they are a terrible person, if not all. The "good" part is that she's actually willing to say that to somebody else, instead of hiding it. Many pwBPD aren't even capable of that.