Gold Fever: Sometimes Horses Need a Little Magic (Horse Guardian)

On their annual horseback wilderness camping trip, Karlie and her dad run into a bit of unexpected trouble, trouble that quickly turns terrifying. Karlie's dad is attacked by a murderer, then as he and Karlie escape, they are separated.
Karlie knows she must find her dad and get him to a hospital as fast as she can, and she's confident she'll succeed as long as she uses all her survival and tracking skills. The only question, will she find him in time?
Then she discovers she's not the only one looking for him. The armed murderer is looking too - for her dad and for her.