Tehanu is the fourth book in the Earthsea cycle by Ursula K. Le Guin. Written almost a couple of decades later when the author was nearing 60, it has a more mature, feminine feel to it. The central character is Tenar (from book 2) who has now grown old, and her relationship with everyone and everything around her. It's a slow-paced but measured read which is for a good portion of the first half, almost like a side-story. Things pick up once Ged makes his entry.
A good read if you like the Earthsea universe. However, it is not standard fantasy fare.