Q: 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: Sarah was afraid of swimming underwater. 
 Initial Context: Her friends were all going snorkeling on Saturday. 
 Original Ending: Sarah did not want to be left out of the big snorkeling day. She decided to face her fears and she dove into the water! Looking back, Sarah wondered what she ever was afraid of. 
 Counterfactual Context: Her friends went snorkeling without her.
A:
Sarah did not want to be left out of the big snorkeling day. But she could not face her fears and dive into the water! Looking back, Sarah wondered what she ever was afraid of. 