The Pokemon Whisperer Book 1 - Indigo League Adventures!

{A Story I've been Writing Since I was a Teenager}
Melody Rowan is the granddaughter of Professor Rowan. At age 15, she's gone on her journey around the Sinnoh region and became the Top Coordinator of Sinnoh. After that she became a Pokemon Ranger. But after three years, Melody felt like she was meant to do something else. After transporting a package to Professor Oak, she headed out with Ash on his journey. Melody's always treated Ash like a little brother and that's exactly what he is to her, a little brother. Melody travels with Ash, Misty & Brock, giving Ash advice whenever he needs it. They journey through Kanto in this first book!

{This is not an Ash Ketchum x OC - Ash and Melody are just best friends who act like brother and sister, annoying each other.}