Throughout the movie, the theme of apples is prevalent. From the decaying apple that signifies Martha and Sean’s rotting relationship to the fresh new apples at the end of the movie showing Martha’s new beginning, apples have a strong presence in the movie to show the cycle of Martha’s grief and how things evolve for her.
So, when Martha calls a young girl in for dinner at the end of the movie and the girl bites into a fresh apple, it’s all about new life and new growth. One of the final moments of the movie also shows Martha checking on the sprouting apples from the seeds she had planted in her apartment. It looks as though, over the course of a few years, she has managed to heal from the immense loss of her baby and start anew with another child.