What else would he do with her? He cant take her back to the village. Earlier in the chapter it shows their ONLY contact with humans is done outside of their special barrier and they have probably never let a human in for HUNDREDS of years if ever in their entire history. She has no place there and taking her in might jeopardize his chance to actually leave. He heard from both the slavers and other sounds that people were comming to deal with the situation so the situation was taking care of itself after that.Now you got me angered, why leave her there?