He could not feed from her. That meant she was in his way, a distraction! He was still so hungry and there was blood right. there. He was going to drink it all. He kept walking towards Tommy, moving quicker when he noticed his brother was running for the house.
"Tommy, wait!" he called out, before realizing that Neytiri was properly in his way. "Move!" he hissed at her, before calling after his twin once more. "Tommy! Tommy, stay there!"