The Last Ride: An Andrea Carter Book

The Last Ride #3 in the Circle C Milstones  by Susan K. Marlow

Andrea Carter is turning sweet sixteen. She is about to finish school, her sister is getting married, and her older brother has a new baby.  Her horse gave birth to a colt and she is eager to work with it and work full-time for the ranch she loves. There's just one problem: a city boy comes to town.