Pebble
McKay, Jane E
The small drone had been sent out from its doomed home world just before it was destroyed by its sun, it searched and found a potential new home, only to be trapped for centuries. It awakened to a completely changed world. The little drone found itself thrown into a world ruled by humans and facing an interstellar menance that they are not equipped to handle.It and its newly adopted human family battle to survive the threat.