Percy nodded, sympathizing. His nightmare had been equally terrible, and for a moment he toyed with the idea of telling her of his so that she may not feel so alone. The idea was immediately quashed, however, as Percy Weasley did not bother others with nightmares, not since he was nine and crawled into Bill's bed because he thought the winter wind was a Dementor come to Kiss him.
"I believe anyone would be hypersensitive after something like that," he assuaged.
"Whenever I have a bad dream, no matter how terrible, I take a few moments to think about it and force myself to see how it is just a dream. I would take a few deep breaths, let the tension out, and try to put it behind me. As long as it's just a dream, then it cannot hurt you. We control them, not the other way around."
He didn't know if the words would help her, but they had helped him on occasion.