Given a premise, an initial context, an original ending, and a counterfactual context, the task is to generate a new story ending aligned with the counterfactual context and as close to the original ending as possible. Each instance consists of a five-sentence story. The premise is the first sentence of a story, and the second sentence, which is the initial context, provides more information about the story's context and the story's general plot. The original ending is the last three sentences of the story. Also, a counterfactual context is a slight modification to the initial context. You should write a new story ending that edits the original story ending as little as possible to regain coherence with the counterfactual context. To sum up, you should write the last three sentences of a story based on the premise(first sentence) and the counterfactual context(second sentence) of the story.

Premise: One day Tammy decided to take her dog on a walk. 
 Initial Context: She had never done that before, so she didn't use a leash. 
 Original Ending: As they were walking, her dog got excited and ran away. It took Tammy two hours to finally find her dog. Now whenever she walks her dog, she makes sure to use a leash. 
 Counterfactual Context: She always used a leash.
As they were walking, her dog used to walk by her side but it ran. It took Tammy three hours to finally find her dog. Now whenever she walks her dog, she makes sure she will obey her. 