I could be wrong but I'm pretty sure it's because she tells him her hair is soft, and Lennie loved to touch anything soft (like the puppies).
Curley's wife asked Lennie to stroke her hair because she was lonely and seeking attention. She enjoyed the feeling of someone paying her special attention, even though it was inappropriate due to her marriage with Curley.
he was allowed to touch her hair. he got permission of curly's wife. she screamed and he got scared and then he held on to her neck to tight and because he is so strong he broke her neck.
Lennie wouldn't stop and he was tightening his grip on her hair. She knew what Lennie had done to Curley.
She offers him to touch her hair.
Lennie holds onto something (the dress, Curley's fist, Curley's wife's hair) when he's scared.
Lennie was obsessed with soft objects. Curley's wife allowed Lennie to touch her hair and couldn't stop. Lennie was so strong he broke her neck.
Curley's wife screams when Lennie accidentally kills her because she is frightened and in pain. She screams for help, but the situation escalates quickly, leading to her tragic death.
Lennie wouldn't stop and he was tightening his grip on her hair. She knew what Lennie had done to Curley.
Because he wouldn't let go of her hair when she told him to.
Lennie reacts out of fear and clumsiness when Curley's wife allows him to stroke her hair. Curley's wife reacts flirtatiously and engages with Lennie momentarily before realizing he can be dangerous.
In Chapter Five of "Of Mice and Men," Lennie accidentally kills Curley's wife in the barn when she lets him stroke her hair, leading to tragic consequences.
Curley attacks Lennie out of anger and aggression, blaming him for the death of his wife. In retaliation, Lennie crushes Curley's hand, revealing his immense strength and inadvertently causing Curley significant harm.
Curley's Wife
Curley's wife yells at Lennie for ruining her chance of being in the movies and for making her lonely on the ranch. She accuses him of being responsible for her unhappiness and complains about her life and her marriage to Curley.
Curley's wife is implying that Lennie got the bruises on his face from fighting with Curley. She recognizes that Curley is quick to pick fights with the workers on the ranch.
curley's wife tells Lennie that "You are nuts , but you kinda nice fella".