it's simple stuff. if your b!tch starts acting up, walk away. she'll come around.Then why say "I expect sex..etc"? that just comes across as weak, insecure and controlling.
She already knows you expect sex. She's not stupid. If she's trying to put you off having sex, it means she already doesn't like you much. So your move is amused mastery and walk away. You don't want anything from her. She's already blown it.
if she doesn't, there's one out there who won't be so difficult.