Color My Horse by Bev Pettersen

A disillusioned heiress swaps her credit cards for a pitchfork and shovel in a desperate attempt to escape her grandfather’s iron-fisted control. However, at the track she must earn the respect of an uncompromising horse trainer who has little tolerance for greenhorns, especially one he’s been forced to hire.
Mark Russell never expected his rookie groom to have the spunk or savvy to last at his demanding race barn. Or that his reluctant respect would turn to desire. But as the forbidden attraction between them sizzles, manipulation and murder threaten not only his horses but also their lives. And suddenly a Breeders’ Cup win is the very least of his worries. From Goodreads.

This was an okay romance but it is their relationship with the horses I like more and I am not even a horse person. Jessica is okay but she is quite manipulative at the same time as she is trying to be independent. Mark doesn't want pretty females working at his stables but is pressured by Jessica's grandfather to do so.
It is a romance so of course it has a happy ending.

This book qualifies for:
2014 Ebook challenge
You Read How Many Books? Reading Challenge 2014
Romance Readers Reading Challenges: Yahtzee Challenge
Crazy Challenge Connection - Oktoberfest
The Challenge Factory - R4: Team Challenge SSS
Goodreads Reading Challenge 2014 
Crazy Challenge Connection 2014 RaT #9
FrightFall Read-a-Thon 2014