It's that no character is ever going to fix her story for her. No character will ever fulfill her. No character will solve her loneliness, her lack of connection, her misery, etc. No character but her. No character needs to pick Buffy up and put her back together again. No character but her.

Agree. We (Romanian) have a saying (sorry if it didn't translate well in English): "Until you hit your head on the upper threshold you won't see the lower threshold". But this applies to people who learn from their own mistakes, some are smart or caution enough to learn from others, some never learn.

I hope she will be able to rebuilt herself (oh, God, I'm pathetic, speaking of a fictional character).