This is my cross to bear- as I now know that not only have I said things that would hurt anyone WITHOUT BPD, but unknowingly, I have delivered what must be emotional fatal blows that she simply doesn’t have the capability to stop replaying again and again causing non-stop pain, mistrust and emotional frustration in the worst ways possible.
I am in an abyss of regret and sorrow every time I see her suffer. Not just because she cannot help but remind me of every transgression, but because I am more and more aware of the constant hurt she feels.
Unless you've done something really terrible, which I highly suspect you haven't, this kind of thinking is seriously disorded and harmful for your self-esteem. Remember that BPDs blow things way out of proportion, through guilt trips, etc. Also, treating her like a "baby" where you can't say one harsh word or simply get angry at is no way to live a relationship. Remember, they're still responsible for their actions, despite their illness. Normal people will forgive even big offenses and not keep bringing it up ad nauseum. Although BPD may be a different kind, if you expect them to grow, it's best to do your part in not enabling wrong behaviour. I speak for experience. I avoided any conflict at all and felt extremely guilty when I stood up for myself, only to teach her it's okay to step on me. All the while I lied to her telling I didn't resent her. Until I just left. If I had communicated my feelings effectively could the relationship be salvaged? I don't think so, since it was disordered on so many levels. On the next relationship(s), that is something I definitely need to work on, to prevent issues.
Does she ever realize that I DO love her? Does she ever feel that my efforts, though often flawed (I’m human and can’t possibly be 100% on all cylinders ALL the time), are genuine and not because I want to fake her out to be the narcissist she thinks I am?
Again, this is my experience. No amount of love will ever suffice, in that you'll heal her condition. She will always be suspicious of you or your motives. BPD people have extreme low self-esteem. They simply can't believe someone is capable of loving them, despite their flaws. They'll never take your word for it that you're not cheating, that you'll not abandon them, etc.