In general I liked the story and as something unimportant like seeing a pile of floating rocks seems like something unimportant and then it is revealed that it was important for the mechanical being because it was something that had caused her curiosity for the first time in a monotonous job. I find it interesting that the search for a new body is an analogy to transsexuality and shows the fear that the people one loves will reject the new version of someone because it clashes with their previous ideas of what that person should be.
Without a doubt a very interesting story.