Star of wonder, star of light

Phoebe is to play the Star of Bethlehem in her school nativity play. I am uncertain whether this is a speaking role or whether she simply has to wander about serenely in front of the wise men.

In fact, she seems rather underwhelmed by the role: her first choice was Goblin King, and she was quite put out to find out that he doesn't feature in her school's version of the Baby Jesus Story...