My lips are sealed!

This is why Cynthia was surprised to see Cyrus as a human when she stopped by the castle in Chapter 10. She believed Newark when he told the other Offsprings everything had gone according to plan, and that's why she thought Helene was playing with her from the moment Trickster as Cyrus walked down the stairs. Her comment of "more like his mom" makes a bit more sense now, right?