His talk with President Amelia indicated that she hadn't caught on to his plans, most likely. It depended because the Martial Sages of the Republic of Gorteau had isolated her mind from him, so he had to rely on his super senses to try and discern her non-verbal communication.
It appeared that she had truly come to believe that he had relented. Considering that she informed him of the conditions for getting what he wanted in return for his services, she was most likely not harboring his scheme.
He tried to sell it as well as he could, genuinely specifying details as to how he wanted the money transferred and processed. He acted exactly like how a concerned supplier agonized about the payment.
She took the time to patiently explain the situation with former president Raymond and what Rui would need to accomplish.
