After seeing Marietta's journal post, Morag had decided that questioning Marietta further was going to be no help so she'd set off to find her herself.
She'd started on the first floor and had gradually worked her way up. By the fifth floor, she'd started to get a bit sick of this. Couldn't Marietta have given a little more of a clue as to her whereabouts? Still, Morag continued, searching the 6th floor and eventually coming to the 7th floor.
It was here that she thought she heard a voice. "Marietta?" Morag called. "Marietta? Are you here?" she really hoped so! Morag didn't mind helping but really, didn't Marietta have a closer friend that had time to search the entire school?
Morag sighed. Well, there were windows and suits of armour (but really, they were everywhere) so hopefully it had been Marietta she'd heard and not someone else or Peeves or something like that.