Heartbreak Hills — Sharon Siamon

Liv Winchester is devastated when it appears that she will have to leave Arizona to return home to Vancouver. She's been looking forward all year to spending summer on her grandparents' ranch, and she's just tried out for a precision drill riding team. Her sister, Sophie, is less disappointed as she hopes time away will give her a chance to get over her massive crush on Shane, who helps out on the ranch. Things only get more complicated when he rescues Liv from an accident and cares for her horse, and Liv also finds herself falling hard for the young cowboy. With their perfect summer and their friendship at risk, the twins have never been further apart. But when Shane is trapped by smugglers in an old hotel in a ghost town named Heartbreak, Liv and Sophie must put aside their rivalry and attempt a daring rescue.