Some things take the adult right out of us and put us back into all of the insecurities of our youth. They just grab right on to the emotions, and leave rational behind. This blog is one of those things. It has made me angry reading it, too.
And your post also made me cry with you.
You are fantastic, and have taken so many great steps in your life. That this can take that away is tragic. Don't let her, or her supporters, do that to you. She doesn't deserve that kind of victory.
Your costume sounds fantastic. Go to your party and have fun. Take back your strength. You have it, this blog is just making you forget it.