I wouldn't trust Vyxsen's word on anything. As to the "who stole the mold" business, I'm inclined to believe he was mistaken and he had his own after all, but there's no definitive information on that. But if anyone took it, it couldn't have been Vyxsen, because she didn't take anything out -- she was late putting anything in the fridge at all, so all she'd done was put one of her molds in.