How does Billy react to the fate of Rubin Pritchard

At first Billy is shocked and confused,

"I felt bad about the death of Rubin. I didn't feel like hunting and kept having bad dreams. I couldn't forget the way he had looked at me just before he died. I moped and wandered around in a daze. I wanted to do something but didn't know what it was".

Billy eventually honors Rubin by placing flowers at his grave,

"I felt much better after paying my respects to Rubin. Everything looked brighter, and I didn't have that funny feeling any more"