books.google.com - Living underground with the other free humans, Esther secretly ascends to the surface and is taken captive by a mysterious alien culture...https://books.google.com/books/about/Days_of_Grass.html?id=fsgZAAAACAAJ&utm_source=gb-gplus-shareDays of Grass
Tanith Lee, September 19, 1947 - Tanith Lee was born on September 19, 1947 in London, England, the daughter of ballroom dancers. She attended various primary schools and had a variety of jobs, from file clerk and assistant librarian to shop assistant and waitress. Lee attended an art college for one year, but felt she would be better writing her ideas than painting them. Her first professional sale was "Eustace," a 90 page vignette which appeared in The Ninth Pan Book of Horror Stories in 1968. While Lee was working as an assistant librarian, she wrote a children's story that was accepted for publication. Others of her stories were also bought but never published. In 1971, Macmillan published "The Dragon Hoard," another children's book, which was followed by "Animal Castle" and "Princess Hynchatti and Other Stories" in 1972. Lee had been looking for a British publisher for her book "The Birthgrave," but has been denied at every House she went. She then wrote to American publisher DAW, known for it's fantasy and horror selections, who immediately accepted her manuscript and published the book in 1975. Thus began a partnership between the two that lasted till 1989 and resulted in 28 books. After the publication of her third book by DAW, Lee quit her job and became a full time freelance writer. Lee has been nominated for the World Fantasy Award, the August Derleth Award and the Nebula. She has had more than 40 novels published, along with over 200 short stories.