"Yeah, no shit." Melinda said, moving away from the wall. "Even our biggest accidents in the labs don't result in destruction like this." Slughorn was eccentric - a quality she and her family actually appreciated - he would have known. Melinda was sure of it.
"I think you ought to be in the afterlife. Puffy cloud somewhere." She said, her hands moving as she spoke, miming the fluffiness of the clouds.
"Wait." She said, turning to Snape. "How long have you been down here? Did you see anything?"