At the Rainbow's End (Rainbow Rock #2)
Susan Aylworth

Ride the Rainbow Home (Book 1 of The Rainbow Rock Series)
When Meg Taylor returns home to Rainbow Rock, Arizona, she never expects that Little Jimmy McAllister, the son of a pig farmer, would have become Prince Charming. Nevertheless, Meg intends to stay for only a short while. Their differences are too great to be overcome. His home is the high desert; hers is the crowded city. Intentions notwithstanding, Meg soon discovers that plans made in the clear light of day fade as suddenly as a rainbow when confronted with the beauty of a Painted Desert moon.
Don't Promise Me Rainbows (Book 3 of The Rainbow Rock Series)
Chris McAllister enjoys flirting too much to settle down -- until he meets spunky, red-haired veterinarian, Sarah McGill. Sarah is charmed, too, but, the widow of a rodeo rider, she has already had more than enough of the commitments and sorrows that come with marriage. As they work together, advising the Navajo Nation on a new commercial venture, they find more common ground than either of them had imagined, but they also discover more differences than they had previously known -- differences that may be too great to overcome.