[I'm basing my decision on the fact that Ratislav honestly told about the expedition, as nothing suggests otherwise.]
-It shall be done. - Ratislav immediately set out to find Mark, but couldn't find him anywhere. [Let's assume you and Gekhadge moved beyond the camp or to a place where I couldn't overhear your confidential conversation.] Then he sat down near the campfire, where he noticed Agnet warming herself.
-How are you feeling? - Ratislav asked the girl. -I'm sorry, I can't find Mark anywhere, maybe you saw him?