The Deed of Paksenarrion

The Deed of Paksenarrion revolves around the life of Paksenarrion Dorthansdotter, known as Paks. It takes place in a fictional medieval world comprised of kingdoms of humans, dwarves, and elves. The story begins by introducing Paks as a headstrong girl of 18, who leaves her home (fleeing a marriage arranged by her father) to join a mercenary company. Through her journeys and hardships she comes to realize that she has been gifted as a paladin. The novel was originally published in three volumes in 1988 and 1989 and as a single trade edition of that name in 1992. The three books included are The Sheepfarmer's Daughter, Divided Allegiance and Oath of Gold.
From publisher Baen: "Paksenarrion, a simple sheepfarmer's daughter, yearns for a life of adventure and glory, such as was known to heroes in songs and story. At age seventeen she runs away from home to join a mercenary company and begins her epic life . . . Book One: Paks is trained as a mercenary, blooded, and introduced to the life of a soldier . . . and to the followers of Gird, the soldier's god. Book Two: Paks leaves the Duke's company to follow the path of Gird alone—and on her lonely quests encounters the other sentient races of her world. Book Three: Paks the warrior must learn to live with Paks the human. She undertakes a holy quest for a lost elven prince that brings the gods' wrath down on her and tests her very limits."