Mim, Chomper, Diver and Kor were remaining silent and watching and listening for a variety of reasons. Mim was just gathering information and not saying anything since it didn't seem like she needed to say anything. Also she was seeing what the general feel of the crowd present was.
Chomper was a bit overwhelmed. The sudden influx of new people all at once, and he'd not heard of any farwalkers having just arrived, not to mention they seemed to be all of such different kinds. He'd not seem anything like this since Littlefoot and his friends.
Diver was a bit bewildered as well and remained silent not having any idea what to say or do.
Kor just watched and listened, wondering what sort of odd or nightmarish angle his dream would go off in now. A plant eating sharptooth seemed the start of it.