Even with the grim scene around them, James couldn't help but grin at the statement. "She must have been a Gryffindor, then." However, he could see how she would have stayed to protect her family. It was stupid, but he did understand that instinct to step in front of anything to save someone you love.
James sighed. "Let's see. The logical assumption would be that they aren't registered, but there might be a semi sane one amongst them, so that's not a given. This seems too-" Brutal, gory, sickening, he thought, but it wasn't what he was getting at. "Clinical, too methodical for beasts. Most likely they were using the potion, so our best lead would be to check with both the apothecaries and illegal sources of the Wolfsbane."