"4000 Miles"

Literary-devices.com defines motif as, "any element, subject, idea or concept that is constantly present through the entire body of literature."  It also explains that, "Motifs are very noticeable and play a significant role in defining the nature of the story, the course of events and the very fabric of the literary piece.". I, however, disagree with the though that motifs are very noticeable.  In the case of Amy Herzog's 4000 Miles, I found that the motif of the play is not very noticeable, but in fact, rather difficult to find.  Based on Herzog's choices in writing the play, the reader is left with many unanswered questions.  For example, the reader does not know why Leo and Vera have such a close relationship, or why Leo and Vera do not get along with Leo's mother, or how Lilly really feels about Leo or him about her, and etc..  With all these unanswered questions, it is hard to find a central theme of the story.  There are so many details within it, many of which that are not explained.  That being said, in order for me to find what I thought to be the motif of 4000 Miles, I had to go back a read the play again.  Despite that, however, I still may be wrong about what I think it is.  Now, the definition of motif says that it can be a reoccurring element, idea, subject or concept.  So, does that mean that there can be more than one motif?  For example, can it be said that Micha's death serves as a motif, being that it is mentioned more than once throughout the entirety of the play, along with Vera not having her hearing aid on at certain moments more than once as another motif?  Or, is the motif something very broad, like, "One event in a persons life could damage a person's whole life and save it as well", like the way Micah's death sort of created a domino effect of all the bad things that are going on in Leo's life, but in the end, it leads to him having a better relationship with his grandmother and gets him a job?  I honestly do not know, but if I had to guess, I would say that the motif, or another motif for 4000 Miles, in my opinion, would be Leo's constant failed relationships with other people based on misunderstanding.  Again, this is just a guess; so I may be completely wrong, but the reason I said this is because throughout the play we see, or at least hear about relationships that Leo has in his life; the relationship he has with his sister, his friends, Bec, Amanda, Vera, and his mom, and although we may not know the whole story of all of these relationships, one thing that is certain is that most of them have failed and mostly because of misunderstandings.  Leo does not get along with his mother because they do not understand each other.  Bec was mad at Leo because she didn't know the real reason why Leo did not go to Micah's funeral, and misunderstood it as that he didn't really care about anyone.  Leo's relationship with Lilly, his sister, failed because he kissed her, and everyone thought that this emotionally damaged  Lilly.  Also, he didn't understand or know if that was true, so he was sort of embarrassed or ashamed to talk to her.  His very brief encounter with Amanda failed, because Amanda did not understand what Leo was going through and didn't understand why he wouldn't use her number.