Cordelia and chocolate

Is getting to be a regular problem. Before break, she somehow devoured a brownie left on my housemate's bed, last weekend she found and devoured the remains of a piece of cake in my housemate's trash, and this morning she (somehow) devoured the remains of some lousy brownies left on my dresser, wrapped in foil. Again, I don't think it was enough to cause harm; but it is frustrating that this happens every Sunday. I wish she could talk.