Question: When Sarah and Drover have left the ball, they appear in front of the hotel kissing in the rain and walking up steps. Then she is at the bottom of the hotel steps closing the door of a car while Drover stands on the top step. Why is she closing the car door as Drover stands on the top step?
Question: Why did Fletcher stop up the water pump at Faraway Downs?
Answer: So they'd be unable to water their cattle. Which has two benefits for Fletcher. The first being that they'd have to take their cattle to the watering hole on the border of their property, making it easier for Fletcher to steal the cows. Second, and more long term, their cattle would be of poorer quality due to lack of proper care. The ranch would lose money as a result, and they'd be more amenable to selling the ranch to their competition, whom Fletcher works for.