Cassandra laughed as he dismissed her comment - a sound that only increased when he actually sputtered a bit as she continued. "Terrible for both of us for different reasons, I think," she corrected mildly, sipping her tea. It was always a question of what she did and didn't know and whether or not she was playing at knowing more than she actually did. Chess, in its most complicated form.
But she hit a topic that he was pleased with, clearly. That was the Albus she really knew. Anyone else might have felt unnerved by holding his gaze so strongly but blue met blue. While she might not have been as infinitely clever as Albus, she knew how to ask questions.
"So a vampire at its basest form and sad, empty walls on the other side - but not necessarily at its most complicated," she huffed a soft breath, frowning slightly at her cup, "After all, we're assuming it's the castle doing it. What if it's not?"