Nate thought to himself I should step back. So he put his hand down and stepped back. Then he thought this is working. It was a good thing he got the professor. But he couldn't have done so without the gryffyndor's help. If she didn't say out loud if someone should get the professor they would've been in a big mess. Probaly injuries, screaming, arguing, all that type of stuff. Then that would've led to the thestral charging and even more injuries. He watched as it followed the trail of meat.