Percy listened to her rambling and Cass, writing a small message to Tiberius to let him know of the situation, hoping that the man exercise some common sense and not go near anyone sick. That didn't mean that he wasn't listening, but honestly he was too tired to even reprimand her for using his first name. He'll find something disgusting for her to do when he got back. "That's all right, Miss Bones. You do not have to exert yourself. 'Percy' will be fine even with this food." It wasn't like he had been able to taste anything for days. Everything tasted the same and disgusting.
He rolled the message, and stretched his arm in Bones' direction. "Make sure the Minister gets it, please." Now, he could possibly get some rest, and eventually get out of this place.