Just TELL your daughter. Tell her in her early teens. Tell her while you are watching a movie in which women are either treated as sex objects or are being glorified for acting like them. Tell her what horny boys want, and ask if that jibes with her Cinderella fantasies. Tell her about jokes that guys laugh at knowingly, like the “coyote” jokes about the morning after.
And hang around her every afternoon and evening, and know (not only by her mouth) where she is when you are not with her. The older she gets while still innocent, the better your chances are.
This scheme means you can’t carefully watch her until puberty and then go back to work full time the second she is old enough to stay home alone. It’s a common move but a bad one. Teenagers need almost as much supervision as toddlers.