Theodore didn't quite understand. He knew Dark Arts, yes, but was less versed in...the dead, aside from knowing why he'd always been able to see thestrals. Though he was beginning to think it would make an interesting research topic. "So you're not just talking about ghosts. Or are they more like...ghosts we can't see?" The prickly feeling in the base of his spine made him wonder: was the angry, invisible ghost of his mother wandering the earth somewhere, even now, ten years later?
He pushed himself carefully from his resting spot against the arch and took a couple steps forward, his leg feeling stiff with the cold, the ache of it seeping into his hip. "Is freedom from this..." He gestured with his walking stick. "Is that what they want? What about...those not buried in cemeteries? Do they just wander?"