How to handle this situation?

I wrote a week ago about a girl that dissed me while we were dancing together. I felt like I wanted to say to her, politely, that was very rude. But a lot of people told me just to ignore her. While I mostly ignored her tonight, the girl did come over to me to say hello and goodnight, since she was leaving. So I said goodnight to her and turned away. I still feel that there must be a better way to handle this, let's hear your suggestions. Thanks! Oh by the way, I had a blast dancing tonight, I even got to slow dance with two hotties at one time. It was quite a fantasy.