False kings and jealous gods

Fantasy and cyberpunk story. Sequel of the Under the upside down sky. But it can be read as an independent story.
Many years had passed since the first part. This is supposed to be the third part. There is no second one yet, may be one fine day I'll write it.
Sybil, a very dexterous thief, tries to survive on the planet which had been taken by Invaders, who killed all the adults