This is book number 1 in the Search for Wondla (Paperback) series.
“Twelve year old Eva Nine has been living underground in her fully automated home with her robot 'Muthr' for her entire life. She's never been outside but has been learning survival skills in the holo-chamber and dreaming of being on the surface and meeting other humans. Due to a monstrous bounty hunter's unexpected visit, she's out on her own much sooner than she had thought--and it's not the world she's been expecting.
There are a lot of fantasy books out there, so many of them that most of the time as you read along, you might occasionally think, 'Oh, isn't that interesting.' But every once in awhile there is that one special book that make you think, 'What?!? How?!? WOAH!' For me, The Search For WondLa is a 'WOAH!' book.”
— Victoria VanZile, Wild Rumpus, Minneapolis, MN