Editing Melanie Cavill (section)

== Relationships ==
===[[Andre Layton]]===
At first, Melanie maintained a purely professional relationship with Layton, locking him up when he wasn't working and being reluctant to trust him. In turn, Layton figured out Melanie's secret on his own simply by observing her actions and behavior. As time went on, their relationship slightly improved after Melanie used her position to clear the way for Layton with the Folgers, revealing in the process to Layton her own humble origins and sympathies for the lower class passengers. However, Layton's discovery of the truth caused Melanie to put him in the Drawers, acknowledging that he was correct and that she hoped that he never had to understand the burden that she had to bear. Despite the danger that Layton's knowledge presented, Melanie took pains to ensure that he remained unharmed.

Following Layton's escape, he nearly killed Melanie before she explained the true purpose of the Drawers and that she was the only one who could save ''Snowpiercer''. Melanie subsequently became enemies with Layton, particularly after she apparently killed [[Josie Wellstead]] while trying to find him. After First Class revolted, Melanie turned to Layton and offered him her help and to his surprise, stated that she intended to give control of the train to Layton after they won. Melanie admitted that she had done many terrible things in the name of saving humanity, but knew that her way didn't work. As a result, she thought that giving Layton's way a chance might be a better option. Layton made it clear to Melanie that there personal feud was not over, however. After being forced to sacrifice the prisoners in order to defeat the Folgers and the [[Jackboots]], Layton realized that Melanie knew that he would have to do it which she confirmed. Melanie sympathetically told Layton that such decisions were what they have to live with every day.

After the rebellion, Melanie kept her word and officially gave Layton control of ''Snowpiercer''. Following this, their relationship appeared to improve greatly, working together to keep the passengers alive. After the discovery of ''[[Big Alice]]'', Melanie went so far as to consult Layton as their new leader rather than just acting on her own. When Melanie was captured, Layton endeavored to get her back and once he had her, showed genuine concern for Melanie's well-being and asked after her recently-discovered alive daughter. The two continued to work together after the discovery of [[CW-7]] breaking up in the atmosphere, bouncing ideas off of it each other and facing Wilford as a united front. Wilford expressed surprise at this given that they had tried to kill each other in the past. Before departing, Melanie calls Layton by his first name for the first time as they say goodbye.

After discovering Melanie's apparent death, Layton is visibly saddened but like everyone else, happy with the data that Melanie got for them and apparently sacrificed her life for.

Six months later, Layton is pleased when Melanie is discovered to still be alive and he helps rescue her. However, Melanie betrays Layton, placing them at odds once again. Despite their differences, Melanie and Layton recognize that they are simply playing into Wilford's hands and neither want bloodshed or fear again, allowing them to reach a peaceful solution to the situation. When the trains separate, the two hug each other goodbye and promise to take care of each other's loved ones, parting on good terms.