The Forgotten Beasts of Eld.

The Forgotten Beasts of Eld, by Patricia A. McKillip

This has been a favorite book of mine since I was a young teen. The story is about a sixteen year old girl named Sybel, a wizardess, with no family, who is suddenly given a child to raise. She and the child grow up together, until Sybel is a woman and her 'son', Tam, a young man. Then, those who brought her the child unexpectedly return and shatter their peace. Living amongst them are various fantastic creatures, cared for and loved by Sybel and Tam. Their beauty, wisdom, and value complicate and enrich the story further. 

There is beauty of language and relationships, deep hatred, and complexities of caring for others woven into the heart of this story. I would recommend this book to any who enjoy sci-fi/fantasy books, mild romance, and a rich story.