Rinoz doesn't know what a battle sage monkey is but she doesn't need to know to become angry because of what he said. If anything, she is certain that he is making up that race just to insult her. She may be ignorant, but she is certain that there is no such race as a battle sage monkey in the plane.
He can feel it through the line of communication just as he can see her power going wild in her body with his third eye. She is livid. Her emotions are boiling over through the connection. Her reaction reminded him of Ghaster and it made his grin wider.