The Texan: Home on the Ranch (Harlequin Superromance No. 884)

"After the failure of her marriage, Marcie Browder returns to the vast West Texas ranch she grew up on, to try to recapture her sense of self and security. but almost immediately she has an argument with her father. The next day she finds him murdered with Tucker McGee, the new ranch forman, standing over the body. McGee isn't the simple cowboy he sometimes seems, and marcie suspects he had a hand in her father's murder. Then she finds out that McGee suspects her. To unearth the real killer, they have to trust each other." This is from the back cover of this book.