I'm assuming that you want to know if she had bpd? who knows!! She has a lot of dysfunctional people all around her, and I'd probably lump you into the mix to some extent, but not as much as the others.

I love you at 2 months into the relationship sounds like nothing more than the high of the honeymoon stage, and at 5 months she finally came around and realized it was a bit premature.

There's nothing in here that really screams bpd, but she does have a lot chaos, and I think it's reasonable that she has some sort of disorder going on.

I think it's best for you that she's out of your life... Keep her out of your life. When you have to set a boundary of needing passwords it signifies a trust issue. A relationship with trust issues is a doomed relationship at some point.