There are several possibilities:
* You may be thinking of a different author: It's possible the author you're thinking of has a similar name to Nikki Carter.
* You may be misremembering the title: Perhaps the book you're thinking of has a slightly different title.
* The book is not yet published: It's possible a book by an author named Nikki Carter is in the works and hasn't been released yet.
To help me find the correct information, could you please provide more details about the book, such as:
* The author's full name
* The genre of the book
* A brief summary of the book
With more information, I can help you find the book you're looking for.