I really liked this story. All the background information gave life to the main character. There was a lot going on here...Linda's relationship to the soil, her feelings for a lost love and a lost child, and her changing feelings for the "perfect people" and the killer rocks.  But I found myself asking lots of questions. How can an asteroid have an atmosphere? Are the Acorns clones? How do the rocks move? I guess I would have liked to have seen a little more Science in the Science Fiction. But overall a great story, Teresa. Give us more.