do you think this will work at getting her gone?
Honestly, this is getting you nowhere and you seem unaware that the problem is your (lack of) truthfulness. Quit messing around with the girl and being passive aggressive. If you want her gone- then say so
" this isn't working how should we proceed at splitting up... ."
Leading her on because you can't hurt her is hurting her (and you) even more. Ask yourself why you feel like you cant do exactly what you want to do to solve this. Who is telling you you *dont* have self-determination?  :)eep inside you there must be a voice that tells you this and it's not from your BPD girlfriend or Wife- These bad passive aggressive habits are old defenses.
Passive Aggressive traits:
Passive, usually disavowed resistance in interpersonal situations.
Ambiguity or speaking cryptically: a means of engendering a feeling of insecurity in others.
(a perfect set-up to trigger angry reactions from BPD Women!)Making excuses for non-performance.
Victimization response: instead of recognizing one's own weaknesses, tendency to blame others for own failures.
The first problem here is yours. Try something different this time and see how easy it is to break this habit. You'll be feeling empowered in no time. Passive aggressiveness is a hard habit to break- but it's within your power. Be forthright and upfront with people. Speak you mind clearly. Stand your ground. Be yourself.
Let her go. Tell her.