There is a dreamlike quality to the magic realism genre that carries throughout this book.  It's wistful and bittersweet.  I love that Harrow describes her protagonists as seeing each other as "ugly" but love each other despite their looks, or maybe because of it.  
At the core this book is a romance and the old adage that home is wherever you are loved.   Or that love is what makes a house a home.   Or something more profound about loneliness in the modern world. 

In any case it's a fine story and the narration is excellent.