Books like Phantom Stallion #23 by Terri Farley

After a tsunami strands the Crimson Vale mustangs on a perilous hilltop, a young rider must decide whether to trust the ranch hands or take matters into her own hands to rescue the lead mare Medusa and her herd.

When 13-year-old Samantha returns home to her family′s cattle ranch in Nevada, she′s worried. She moved away two years ago to recover from a bad fall off her beloved mustang, Blackie, and she′s still not sure she can get back in the saddle. Her new colt doesn′t seem to like her, and the other ranchers treat her like the boss′s spoiled daughter, and Blackie has been missing since that fateful day. But that′s just the beginning. When Sam suddenly finds the fate of a mysterious mustang who may or may not be the missing Blackie resting in her hands, she has to learn to be a real cowgirl, ready or not. The classic theme of a girl and her horse is set against a backdrop of mustangs, tumbleweeds, and a West that′s still Wild. Phantom Stallion #2: Mustang Moon A rogue mustang is stealing mares, but the Phantom is taking the blame. It′s up to Sam to defend his innocence and his life.