Huh?

The girl only took two steps away from the mirror before the grin erased off her face. She was panicking.
"What's wrong? Why aren't you going?" The reflection demanded to know impatiently.
"...It's not worth it," the girl said thoughtfully, "and I don't even need it..."
"What do you mean 'not worth it?'?!" The reflection exclaimed angrily now, holding onto the frames of the mirror in an attempt to intimidate the girl. But the girl only grinned now that she stood facing herself.
"It's not worth it. And nor are you." She giggled now, and the reflection stopped moving, freezing in the same position as the girl.