Roberts, Nora. Three Sisters Island trilogy #2nd

"Ripley Todd just wants to live a quiet, peaceful kind of life. Her job as a sheriff's deputy keeps her busy and happy, and she has no trouble finding men when she wants them--which, lately, isn't all that often. She's perfectly content, except for one thing: she has special powers that both frighten and confuse her--and though she tries hard to hide them, she can't get them under control. Distraction soon arrives in the handsome form of MacAllister Booke--a researcher who's come to investigate the rumors of witchcraft that haunt Three Sisters Island. Right from the start, he knows there's something extraordinary about Ripley Todd. It's not just her blazing green eyes and her sultry smile. There's something else. Something he can detect, but she'll never admit. Fascinated by her struggle with her amazing abilities, he becomes determined to help her accept who she is--and find the courage to open her heart. But before Ripley and Mac can dream of what lies in the future, they must confront the pain of the past. For Three Sisters shelters centuries of secrets--and a legacy of danger that plagues them still."--