The Cowboy’s Promise by Maggie Carpenter

When a horse trainer crosses swords with a nasty woman at a horse show, he has no idea the lengths to which she’ll go to have her revenge…
Blake Coleman has been crazy about one of his students for over a year. Her name is Heather Hunt. She’s sassy, though sometimes a bit nervous, and is far more talented than she realizes.
Heather has had a crush on the handsome cowboy since the day she drove into his ranch looking for lessons. He’s a sexy combination of easy-going but tough, and he has a look in his eye that makes her toes curl.
When Blake and Heather encounter an unkind horse owner at a show, Blake accidentally discovers she’s up to no good and turns her into the police,

Her name is Courtney McCallum.
No-one gets the better of her.
Not ever.
She’s determined Blake and Heather will pay!

Even if Blake finds out, how can he stop her hurting the only woman he’s ever truly loved?

If you enjoy suspense and sexy cowboys you’ll love this sizzling page-turner.