This is the most upsetting thing I've read in a while. I've had some horrible boyfriends who weren't nice to me in lots of ways, but I don't think I've ever felt sheer terror like this woman would have.
She makes some apologies for telling the story from a standpoint of "I should have known better", but I didn't feel that when I read it. I don't question why she did what she did at the time, because I know that we don't think reasonably when we're hurt, being hurt, afraid of hurting someone else or (worse) don't have the confidence that we're not responsible for what's happening to us.
It's an incredible story. Not because it's great, but because it's true.