Used book – A Horse Called Wildfire, Bonnie Bryant

Carole, Steph and Lisa are about to spend their February holidays at the Prairie Ranch, with their friend Kate. Frank, Kate's father, has just bought five horses for them to take care of! But one of them, a beautiful black mare, worries Carole: she is nervous and agitated, to the point that Frank threatens to get rid of her if she doesn't adapt... Will Carole manage to tame her in time?