Reflection

She stood before paintings in the gallery, inspecting them, given them their correct grade.
"This one lacks colour."
"This one needs more work on perspective and lighting."
"And THIS one... my goodness, it's like the artist didn't even try."
She stood before the piece, shaking her head, marking down an F.
"Excuse me, madame." one of the students said, "That's not a fair score."
"And why not?"
"Because..." they replied nervously, "You're looking at a mirror."
She blinked, puzzled, as she realized it was her reflection.
She blushed, scribbling out the grade, writing an A instead.
"A wonderful piece indeed!"