Lennie accidently took a woman's life. This woman was Curly's wife who was the son ranch owner. When Lennie accidently killed his dog. Curly's wife was the one who found Lennie Crying. Being sympathetic she let Lennie feel her hair as she likes soft things. Afraid that Lennie would "muss up" her hair she started to freak and Lennie tryed to keep her quiet so George would let him "Tend the rabbits" getting angry at Curly's wife Lennie accidentally snaped her neck.