Nerilka's Story (1986), a novella by Anne McCaffrey, is set well before the classic era of Pern. The pass is almost over, a disease is about to sweep the land, and Moreta is about to go on her legendary ride.
Against this backdrop is the story of Nerilka, yet another McCaffrey heroine who isn't appreciated at home, doesn't quite fit in with the other girls, and who goes off on her own to find people who appreciate her. Her father is callous, of course, and there's also an egotistical domineering woman who ruins everything.
The story is fairly turnkey McCaffrey fare, competently done and smoothly related. It's a good afternoon read with no major flaws or blemishes, and being a novella, not loaded down with bloat. If it were a novel, I might knock off some points, but it's not. It's just enough of Pern to get a satisfying swig and no more.