Well finally I think I know what the term means. I am really quite sorry that this has happened to you. I can see why this would be taken personally. I know I would do the same.

I think it most likely that something has happened at her end and that you have done nothing at all to cause this.

I mentioned today in another thread the consideration of evidence for things that concern and worry us. I am trying hard to think this way these days myself. Basically consider what IS the evidence for thinking you are the cause for this? What then is the evidence AGAINST this - namely what evidence is there you have done nothing at all? I am going to reach out here and hazard to guess that the second list is actually more realistic if not even longer.

I am sorry you have lost this friendship. It obviously mattered to you a great deal. Healing from broken relationships of any kind is difficult at best. I think I would also ask myself about those good qualities that made me a good friend in the first place and remind myself that they still exist.