Dorothee Berryman is listed in the credits as "Dorothy Berryman".
In previous episodes, it appeared that Taylor had four people, beside himself, in his secret meetings. In this episode, Cutter seems to be shown setting in the furthest seat to screen left. But one quick cut shows a previously unseen girl looking screen right towards him. This would indicate that there are more than four "students", but they are being cropped out of the frame, assuming that the series is being filmed widescreen. Since it has been established that Taylor has an obsession with the number "6", I think it is safe to assume that there are actually six people in his class.