River has finally learned patience.
She is steady and unrelenting as she works away on Jayne. She wears him down. He is a rock and she is the water. The waves lap at him, weathering away the roughness. Slowly, so slowly she turns him to sand, running it through her fingertips, bending it to her will. She is the ocean and he is the shore.
They fight, she wins, the water washing away the sharpness. They fight, he regains some ground. The tide goes in and out. She wears him down slowly, until the relationship is smooth like glass. Shiny.