HEIRESS They met at the funeral of one of the most prestigious men in the country, Dean Lawson, their father.  Abbie Lawson, the dutiful genteel daughter breed in the lap of luxury and, Rachel Farr, a mistake born of a passionate love affair, are almost identical in appearance but are worlds apart.  Only one daughter can be the heir to the endless oil fields and magnificent thoroughbreds.  A fierce competition has arisen between the women, not only for the inheritance but also for the proof of a father's love. They