I am looking for story, please help

[Doobbyy]

I am looking for a multi chapter story. It is about a young girl, aforoamerican, that is probably from Texas (I am not sure). Her father borrowed money from someone, a villain. This villain wants the girl for himself, when her father does not return money he has him killed. The girl knows she has to run away to save herself so she finds a job of housemaid or cook at a farm or a ranch in a different state and move there. Her boss is a slightly rich man (I think he has military background but am not sure and he is white) and not overly friendly. At this farm there are horses and other ranch hands are attracted to her and one of them tries to seduce her which the boss does not like. After few chapters she sleeps with the boss (she was a virgin), the boss marries her as she could be pregnant and he has a meeting in her home state (city) so they go there. They stay at a hotel whose manager was a former lover of the boss and think they married only because the girl is pregnant. The villain finds out she is back and tries to get a hold of her. There is a car accident. I am not sure if the villain is killed. Then there is a happz ending and at the end the girl finds out she has a half sister whose mother died of cancer. There is also a sequel about the sister. DO you know it?