Legolas heard the cry of his cousin, and looked down the river's path, watching the barrels dissapear in the distance around the corner. "Mel", he suddenly said to her. "Tell my father that we have a prisoner, and that its information may be useful for us", he said to her. 

As the company continued to float down the river in their barrels, there was a peaceful movement in the water, so they could just drift down slowly. "Anything behind us?", Thorin called to Balin, who was near the back. "Not that I can see" "I think we’ve outrun the Orcs" "Not for long, we’ve lost the current", he told them as they continued to drift with Maleficent standing halfway in the water, so she could help move the barrels. She worried for Kili after he was shot, and he could probably be mortally injured. This worried her badly, like how a mother would be, and she's internally surprised that she's getting this feeling. Maybe a true bond was visible between them after all.