One thing I have learned in my long life....never write someone off totally. She broke your trust, whatever her reasons that still hurts. Even if what she did was best for you it would hurt. You need time, and you need to be able to withhold info from her. You need to gain that trust back, and that could take a long time. But someone who was a really good friend is worth fighting for. It's worth forgiving a true friend, and trying to start over. I honestly think that if she told you all she has said it would hurt you more and make you angrier. I think it's best to let sleeping dogs lie, let her know that in NO WAY do you approve or forget what she did. Tell her it isn't acceptable behavior for a friend, and that if she wants to maintain a friendship there will be a very long trial period. But don't just toss away what is possibly a very good friend over one really big mistake.