Nell's Cowboy by Debbie Macomber

Nell Bishop, widowed mother of two children, is turning Twin Canyons into a dude ranch. One of her first guests is Travis Grant, a celebrity of sorts, a wannabe cowboy, an Easterner known for his books about the West. Nell's kids are crazy about him, and Nell...she could fall for him herself. But it's too soon to be thinking of love and marriage again. Too soon! Not only that, Travis seems intent on stirring up the town–by uncovering the mystery in its past....