In the story there is a discussion of jack-o-lantern. This is a European and North American tradition where pumpkins are carved and gutted and they create a shape or image. This tradition has relation with Christianity to represent the Christian souls in purgatory. Moreover it is the festival of the dead. In the story we see both of the characters are carving and gutting the pumpkins to make jack-o-lantern. In which they used candle-light in order to create a situation of Halloween to scare the evil spirits.
The most important aspect and unavoidable aspect of human being is Death. The story Yours also discusses death as its major concern. But the characters are not taking this serious issue seriously. It seems that everybody has accepted this death as a general matter of life. We see Alison who is going to die in the story is not unhappy that he is dying or she is not sad at all as she has willingly accepted the death. In case of Clark also it seems that nothing has happened or nothing is going to happen, everything is going on as usual, there is no expression of losing the dearest one from his part until the end. They both are carving pumpkins without talking about the thing that is going to occur to them.