This rather vague phrase leads to tricky interpretation that's sometimes actively milked by the writers usually of romance fiction. Usually the assumption is that the character doesn't like machismo, or she has bad luck with men in her life, like her father or other relatives. That is, traits associated with men manifest into a dislike of men as a whole. This can pose a problem for any male lead trying to woo her, meaning it takes much longer than suspected to win her over. As with all dislike tropes, the degree to which a particular character Does Not Like Men varies, from simple dislike to outright hatred.