Good for her. How can you shake hands with somebody who's actively contesting on behalf of a country that is murdering your own people, committing war crimes, threatens the whole world with nuclear threats and puts bombs on your country's nuclear plant and plays with world hunger.
I understand the rules might be "respect your opponent", but that opponent should contest under a white or neutral flag. Not under a flag of a country that commits atrocities.
So, I would suggest the contesters and the people who make the rules to also take that under consideration. It's an insult to the rest of the world to contest under a flag like that.