She knew Chang was lying to her. Mitsuhama might try to tell Renraku that they were banishing the spirit, but she was certain the corporation would try to control it instead. If not as a magical means of accessing the Matrix, then as a parabiological weapon. She tried a lie of her own: "Nobody can control that free spirit. You’ll be making false promises to the public—and they’ll be angry when it turns out you aren’t able to keep those promises."