When Fleur caught sight of the smoke, the girl started to flail about with her wand, as if she thought it were now completely on fire. Perhaps, she had been trying too hard to try and impress the professor. When he rushed over to fix her want, she, somewhat timidly, murmured a "Thank you. Sorry, Professor Ruskin."

With a bit more care, she observed the others in the room, and then attempted once more. This time, she was much less enthusiastic and more careful. "Lumos."