Mel's mind immediately went to the effect it would have on the reputation of Britain, and thought at least it wasn't one of the foreign students. Then she felt really guilty about it. She would have been one of the people helping to usher students back to their common rooms, even though she's not a prefect. She'd have tried to keep things calm and reassure the younger students there wasn't any danger but inside she's thinking ohgodohgodohgodohgod.