Why should my attention affect her at all?
A hallmark of BPD is denial. Soo...IMHO, when us Non's give them attention after they have repeatedly kicked us in the teeth, it says to them, "What you did/who you are really isn't bad enough to make me never want to talk to you again." and reinforces their denial. Us giving them attention allows them to not deal with the fact that they ran yet another person off in their life. This is also probably why they never seek/avoid closure and continue re-engages years later.
How could she possibly think any of this is true? After she left me how is that possible?
I think we all have a very difficult time with this. I don't know if they convince themselves of this to avoid acknowledging how sick/twisted/evil their behavior is (and thus further pain), or if they know better and just want to suck us back into the FOG which would allow them to repress acknowledgement of their inner filth.
I take solace that one day when her physical beauty has faded, she will be forced to sit with herself and that hideous beast within. And NO ONE will be able to slay that beast but her. Maybe then she will have her emancipation...