Personally, I believe a democracy-loving person is almost obligated to heckle a dictator (when it can be done safely).
>I know she's not a Christian, but the dramatic effect is strong.<
How do you know she is not a Christian? At least she knows right from wrong, so she is familiar with Christian morality.
What she did is true courage as she risked much (she may go to prison or be murdered by the Chinese) to speak up. This is unlike the "courage" of Hollywood where you get a lot of kudos, increase your standing, and get better acting parts because you criticize the President.