We can also bribe them. We can do both.

[ He will bake them so many cakes if that's what it takes, but Peach can also bake so maybe not. He'd offer to clean the house, but Plum's got that covered. And none of them have accepted his offer to do Pumpkin's job. ]

Better some advice and none at all, really. They know who the culprit is. They know everything that happened- it's how they can give hints in the first place. We just need to find a way to get them to tell us.