"Apology accepted David." Helena said a faint smile pursing her lips. Finally the boy was smart enough to pick up on how upset she was by talking about that spirit. If only Sir Nicholas was there to bring some sympathy, but he wasn't, she'd definitely seek him out after this. He'd brighten her mood.

Shrugging her shoulders Helena said "Many brilliant witches and wizards have taught at this school like the great late former headmaster and professor Albus Dumbledore over the years. Some of them like Dumbledore have probably been skilled at those practices of magic. I have not actually seen it though." Why was David so intrigued by this very advanced magic? It made her curious.

Nodding she confirmed. "Yes, ever since I became a ghost I've lived at Hogwarts." Shaking her slightly she said "No, a ghost can't leave the place they haunt. The place a ghost haunts has some extraordinary connection to them and how they died. I can't leave the castle and Moaning Myrtle for instance can't leave her bathroom." Helena knew there were exceptions though but she didn't bring those up. David didn't need to know everything.

"The spirit division in the Department of Regulation and Control of Magical Creatures at the ministry have some degree of power and jurisdiction over all existing and known ghosts and they chose where we shall live and see to our welfare but that doesn't mean they are always kind to us."