I don't agree with her position on the issue, but I respect her right to express her views. I think HK government should not try to suppress her will to voice her own opinion. HK people should enjoy freedom of expression.
BTW, I think she's just doing all this for fun but haven't had much thought into the matter. She said "她 不 是 支 持 西 藏 獨 立 , 她 只 是 支 持 由 西 藏 人 民 決 定 西 藏 前 途 。" but the flag that she's holding is a symbol for Tibet independence.
Also, her account is probably hacked by China supporters. I don't see how she would think "事 件 涉 及 政 治 因 素 "
I think she's still young and vivacious, but ignorance is better than apathy.