Myrtle had been following the Fat Friar around alllllllllllll daaaaaaaaay, well, invisibly, all day. She'd seen him try to fly through all the food sitting on the floor of the Great Hall and had giggled to herself when he'd looked in a mirror and freaked out at seeing THROUGH himself.

He was such a fat old goof. But, she was doing her job for her friend, and now she was doing the job here, where he was hanging out with Nearly Headless Nick. Myrtle floated in after the Friar and hovered about the pair, more or less eavesdropping from her post at the top of the observatory.

Sound carried so well here.....the room had great acoustics.