Theme of Book

My book has more than one theme in it, there are multiple stories in it. The themes of my book Crazy Little Things would have to be like a mystery/slightly a horror/sarcastic. I'd say its a mystery theme because the little girl, Samantha Felder, no one knows who she is. Yet they still have information on her, she died awhile back and now shes back to the pageant again. The mystery is how is she there? Is she a ghost? But it also has you thinking threw the whole story. Its slightly a horror because it has you thinking like what if i was there and saw that? It'd scare me, its a reality check basically. A little girl that no one knows of, just showing up and being splendid with her talents and shocking the whole crowd. Its sarcastic by Pamela; the director, she doesnt take it so serious and just is worried about all the parents coming and complaining about the winning choice. She just shrugs it off that Samantha was a ghost, and decides to treat it like a small joke.