What is the conflict? How is it resolved?

The story gave no hint why the couple were separating but the sentence,"It was getting dark on the inside too" gave me the impression or predicted that there is an argument going on inside the house.I think the conflict in the story was that both the parents wanted to take custody of the baby during the separation.I think they behaved so immaturely in the sense that they involved the baby in their fight. The conflict did not resolve based on any agreement.It came naturally; The couple, having dropped the baby and killed it,rendered them with nothing to argue or fight about.