Really, do you think that Kathleen, Charles or August will tell Carnation what's going on at the club? Do not make me laugh. Why does carnation know about one of the employees? If she starts to be interested in Darius, she will immediately incur suspicion. Well, what about the modulator? You might be surprised, but now it’s just a program on a smartphone. And she doesn't need him. There are tons of ways to change your voice without a modulator. In addition, the first time they call the factory and most likely talk to the receptionist, and only the second time they talk to Stella.