Detailed Instructions: 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.
Problem:Premise: Melanie was always leaving things in her pockets. 
 Initial Context: Her mother always forgot to check before doing laundry. 
 Original Ending: One day her mom pulled the laundry out of the dryer. She found black stains all over everything. Melanie had left handfuls of pens in her pocket and ruined everything. 
 Counterfactual Context: Her mother always checked the laundry.
Solution:
One day her mom pulled out a pen from her pocket. This could stain all over everything. Melanie could ruined everything if her mom hasn't checked everything. 