I'm afraid I think you could be right about her mother taking her journal.

I doubt it's anything dire, though, if you're thinking that she could have discovered something about all of us. At least, it doesn't do much good to worry about that yet, since we can't do a thing about it--and it's much more likely it's about something completely ordinary that her mum's gone and taken a strict view against. If you see what I mean.

Still, we're keeping an ear out for Aurors at the door. Though that's nothing new. We always do, really.