He did not hate it, he wouldn't mind her doing it again, rather, he had the small hope she would do it again. On the other hand, he feared he might upset a very careful balance if he acknowledged it in any way.
Their objective, stablish a base on the ruins, and then sent their students to enter the forest. As for their soldiers, they were to search for the beastman runaways, without knowing the dragon that they were poking with a short stick.
