how does billy pay his respect

At night, Billy goes with the dogs to the Pritchards' place and takes flowers his sisters gave him a while back. He quietly sets the flowers on Rubin's grave, but as he leaves he dislodges a rock and disturbs Old Blue. The hound bawls, and Mrs. Pritchard comes out and sees the flowers on the grave, though she cannot see Billy. She cries as she enters the house. Billy feels better after paying his respects to Rubin. He promises his dogs they will go hunting later at night.