Being an appointed organiser of a World pageant, China has every right to disallow a guest to come to a country and attempting to discredit the government.
Furthermore, she is also a proponent of the outlawed Falun Gong. I fully support the banning of the Falun Gong which is a cult or a sect that totally blinded its followers. Throughout Chinese history, it is seen that there are many sects which are harmful to societies and Falun Gong is no different.
Be strong China and we support you.