There isn't a lot of public information on the author. There is no Wikipedia page on her, and her official website (https://leahkonen.com/about/) does not offer much information about her life.
Though there is one mention of her being a romantic on the inside cover of The Romantics. It says that she became a Romantic while writing the book, but we can only imagine why she feels this way. She is married, and some scenes from the book might have been influenced by her own relationship. We can hope and dream that she might explain how or why she came up with the book in a later time. Or maybe a website will reveal more about her. Even without an explanation about the book, it's a great read and the author should definitely get a better website or a Wikipedia page!