The Witch and The Cowboy by Ryen Rowe

Walker Reid is an average teenage cowboy whose only concerns are cattle and caring for his little sister. Everything changes when he stumbles upon a witch-murder, and he is thrust into a world of magic and mayhem.
Freya Redfern is out for the blood of her mother’s killer. When she catches wind that a certain young cowboy is to blame, she casts spells now and asks questions later. After all, whether he knows it or not, he is the descendant of one of the most infamous witch-hunting families in history.
Faced with Walker’s obvious obliviousness and seemingly kind heart, however, Freya realizes she’s been led astray. Knowing her coven will not be so quick to hear his case, Freya enlists Walker’s help to find the real killer and clear his name. Together, they fight fierce adversaries and face great betrayals, but there is one thing they cannot overcome—their forbidden feelings for one another.