Terezi huffs out a small sigh of relief once they're all up into the trees. She climbs one branch higher to give Calico some room, but doesn't go further than that. There silence that follows is unexpected, but she realizes that... Jack probably isn't going to be able to communicate well in this instance, either.

Well, judging by the way he's not even looking at her, Terezi assumes that he's not ready to make any attempt at conversation with their newest addition. So she might as well break the silence for him.

"I asked him if he wanted to slit your throat and keep moving," she says out loud, directed at Calico. "But for some reason, he insisted on saving you. I'm pretty sure that's against the goal of this game, but I'm just a lowly tribute so what would I know."

You're welcome, Jack.