Paisley, Pony Girls series, by Lisa Mullarkey, published by Calico (an imprint of Magic Wagon, a division of ABDO), 2019.

About the book:

It’s a new year at horse camp for new Pony Girls! Charlie, Gracie, Paisley, and Zoey narrate their own stories as they navigate anxiety, learn about caring for animals, and take photos for the camp newspaper. Readers new to chapter books will love this look into the world of Storm Cliff Stables, with larger text, fewer words, and younger girls in the same pastoral setting!

After campers and their horses dress alike during Twin Day at Storm Cliff Stables, Paisley and Zoey decide to be twins for the whole summer. This starts to bother Paisley and prompts her to complain to Aunt Jane, but she gets warned about tattling. When Zoey puts herself in danger, should Paisley tell?