That's actually a really good idea.

Hermione. D'you think the Headmistress would do it?

And, um. If you asked her to do this, would she send them another message later if we need her to? I mean will she get annoyed about us asking more than once? D'you think she'd even do it at all? I mean, maybe they only use that kind of message for emergencies, yeah?

Only, this could get to be really serious. If Umbridge decided to starve us.