It's Lonely at the Centre of the Earth
by Zoe Thorogood
Huh.
Compared and contrasted with [b:In Limbo|123252689|In Limbo|Deb JJ Lee|https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1678927831l/123252689.SX50.jpg|95090770] here: review of In Limbo