Lennie was a child-like character, he loved to mimic George, he was forgetful, and he was innocent. But because Lennie was child-like he didn’t understand his own strength. When lennie was in the barn with Curley’s wife, she asked him to feel her hair. But when he wouldn’t stop petting it, she yelled, thus making him latch on rather than let go.
“She struggled violently under his hands. Her feet battered on the hay and 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 gonna let me tend no rabbits.” He moved his hand over a little and her hoarse cry came out. Then Lennie grew angry. “Now don’t,” he said. “I don’t want you to yell. You gonna get me in trouble jus’ like George said you will. Now Gabrielson 2 don’t you do that.” And she continues to struggle, and her eyes were wild with terror. He shook her then, and he was angry with her. “Don’t go yellin’,” he said , and he shook her; and her body flopped like a fish. And she was still, for Lennie had broken her neck.”
Even though he didn’t mean to kill her, she still died. This was all because he didn’t understand his own strength. Since he didn’t understand the amount of power he has he ended up breaking her. If he actually did understand his own strength he wouldn’t have died, he and George could have