Her need for attention actually makes the men treat her worse as they think of her as a tart. This makes you sympathise with her more, as she is young, beautiful and full of life and her husband still chooses other women over her which surely must make her feel unworthy and insecure as well as lowering her self-esteem.
When we first see her, her body language is deliberately provocative when she leans against a pole in the barn. Candy shows his loneliness when he was going to leave the share of his money to the guys that used to work with him on the ranch.
She simply has nothing to do and nobody to talk to.
Even her husband does not treat her with any respect. They remind readers that most men like them are alone.
She does not treat others with respect because she is never shown any respect herself, mainly as a result of being a woman.