Is this quote a good example of diction to show that Lennie did not intentionally kill Curley's wife?

"She struggled violently under his hands. Her feet battered on the hay an she writhed to be free; and from under Lennie's hand came a muffled screaming. Lennie began to cry with fright. "Oh! Please don't do none of that," he begged. "George gonna say I done a bad thing. He ain't gonns let me tend no rabbits" (Steinbeck 91).