Try to help her change your story. Notice how she was able to
   ditch the guy who rejected her because of the story of her past.
   That's empowerment. There's strength available in tragedy. She's
   already using it. She told you her story. The response sorts out
   who can accept her and who can't. Also, I hate to say it, do be
   careful of emotional manipulation. Your deep feelings of hurt
   and anger generated by someone you care about telling you this
   _could_ be used for bad things. Do everything you would normally
   do, but keep a straight head on your shoulders too. I'm not
   trying to plant a negative seed here: Just a little tiny
   observer that sits up in the corner of your mind. Don't let the
   little observer take over either but it's good that he's there.
   That caution said some humans do tragically awful things when
   nobody's looking. A whole secret world can be created in a small
   environment like a broken family where unfathomable things
   become commonplace. In some ways the fact that we can create our
   own normals is fantastic. But in cases like this, creating a
   "new normal" is tragic and destructive and can cause deep issues
   in survivors that takes a special care to understand and help.
   Most of all, my heart emoticon goes out to you and to her.