Katie and the Mustang, Book 4 (Hoofbeats)

With trepidation, Katie continues Westward with the Kylers. The mountainous terrain makes for difficult traveling, and they arrive in Oregon shortly before the winter snows hit. While the Kylers and the others begin the search for land, Katie's worst fears are confirmed. Her uncle is not there. Then she realizes that she has brought the Mustang home, and she cannot keep him with her anymore. Left with no family and without the Mustang to rely on, Katie must find her own way...