Welcoming a dog into your home is supposed to bring you love and happiness, but for some reason we've attempted to turn our dogs into little machines that are obligated to follow our every command as if they're the latest in artificial intelligence technology. Your dog is not a little robot.
Respect that your dog is her own little unique monster, with her own wants and emotions. You can't control those, and the more you try the more frustrated you're going to get.