Why not throw away the fox?

Lyana stared at the human walking in front of them in deep contemplation. She was trying to assess his character from the interaction just now but she was only drawing a blank. 

The man remained a mystery. The guy had saved them from the barbarians but he clearly waited until it was safe for him and did not react when one of them was brutally tortured. Perhaps he wouldn't have saved them at all if there wasn't a safe option available.

On top of this, he clearly had an ulterior motive for doing this. He wanted them to help him cross the barbarians. This told her that the person was a ruthless opportunist.

The meeting with the other humans just now had also told her the same thing. Though the fat one and the woman had visited him to discuss peace, the ruthless guy had not budged an inch.