Carth gave her a confused look when she pointed out that thia was out of the goodness of his heart. In all technicality, yes. They were short handed and needed help. So why not? But it wasnt like he was going to tell them what he was seeing through his eyes. That in a way, he saw himself in her. He was also going off of his gut feeling. To follow and help find out the cause of this disturance in nature. 

Deeper into the forest they had gone into and he too was noticing that they were being watched. "I understand the feeling. But let us trek forward. It maybe out of curiosity, fear, or waiting to strike. In this matter, I hope its the latter." He says with his brown eyes scanning the area for anything suspicious.