Melinda was upstairs in her room, reading a book with music playing, so there was no possible way she could have heard what happened. She didn't even know what Marek was doing, other than being fairly sure that he was home. Still, in the middle of a sentence she found herself closing the book. It wasn't what she wanted to be doing anymore. She wanted to go find Marek. So she put it down, tucked her wand into the pocket of her pajamas, and headed down the stairs.
She noticed that the door to Marek's lab was closed -- it was generally left open when it was unoccupied (possibly not the wisest decision, considering what was in there). She went and knocked firmly, wanting to make sure she wasn't going to walk into a room full of poison gas. He didn't answer. That was odd. "Marek?"
She opened the door and hadn't even fully registered what she saw before she was kneeling next to her brother. Melinda spotted the bezoar in his hand and snatched it, tucking it into his mouth and holding his jaw shut. Nothing happened and she rubbed his throat to make him swallow, her hands starting to feel cold, able to hear her own pulse in her ears.