JD felt horrible. Hannah did not look like this was her best sleep over ever. In fact she looked more like a prisoner. The girl did not want to say anything about the fact that Sirius Black being in the castle was very likely. Instead of telling her yes, she shook her head.
"It was probably just a very over active imagination or a nightmare. There's no way to get in here without someone noticing," she told her. "I've tried sneaking all over this place but it's impossible. Dumbles just wants us to know that he is taking the situation very seriously and wants us to feel safe here. That's why they're searching the castle."
That or they don't want any of the kids to get killed...