V is for Victoria and the Ghost by Janet K. Brown
Blurb (fromAmazon): When her mother leaves the family to become a Dallas trophy wife, Victoria’s dad moves her and her sister to a North Texas farm to herd cattle and raise chickens. Refusing to believe this is more than a temporary set-back, Victoria tries to make new friends which isn’t an easy task. The first one stabs her in the back with gossip and a sharp tongue. Meanwhile, her new stepsister takes Victoria’s place in her mother’s heart. Rejection and anger stalk Victoria like a rattlesnake in the cemetery. Good thing she makes friends with a ghost and through him, a good-looking teenaged cowboy.