You need to get help for your white knight syndrome, your need to caretake, your lack of love of self and your (dare I say it again) total codependent personality.
You do know that any man that was not with the issues I mention about would leave a woman that is damaged and needs fixing. He would not stay (even if he loved her) because he would know that no matter what he did to please her, she would just need something else that would make him jump through hoops to achieve.
You would do very well to take this story of yours to a different forum board called BPDfamily. [url=http://bpdfamily.com/]BPDFamily | Borderline Personality Disorder[/url]
Here is a link to their forum board that includes codependent partners of BPDisordered folks and BPD'ers themselves. You'll get more understanding there.
[url=http://bpdfamily.com/message_board/]BPDFamily.com - Boards[/url]
If you love yourself then you will do the work you need to do to get past what ails you (those things that don't make your flight response kick in when you're in danger. Which in this case you are in danger of losing yourself and becoming just as sick as she is if you stay and try and adjust to what ails her)
Love has nothing to do with whether or not you should stay. Everyday people leave people they still love when their own mental and/or emotional health is being whittled away one psychotic episode at a time.
Learn to stop wanting instant gratification and never, ever move yourself in with someone you don't even know. You've found out too late that she can't be fixed which made it much harder for you to distance yourself from her when you've been co-habituating.
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If you know anything about personality disorders you will know that "time" won't change a thing. Even more times then not when the BPD'er is in therapy it will take years and years before there is any improvment to their stunted emotional growth. Thinking that with time it will change is futile... In time the issue may change but that's about all.
Get out now and stay out. Cut all contact so that she can't hoover you back in for more dysfunction. Love yourself enough to do that.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion