We All Fall Down - Gravity Shattered

"I live in a city where gravity don't work right and stories will eat you alive." Zanna doesn't think she needs friends; she doesn't need anybody. She's been taking care of herself and her younger sister just fine her whole life. But when their neglectful, alcoholic mother dies, they are truly on their own. Zanna's only option is to venture into the treacherous gravity zones and seek out the feral kid packs that roam the broken, abandoned city. Sweet, sunshiny Neverwhen is the first person, besides her sister, that Zanna has let herself care about in a long time.
Neverwhen's friend Grammar, on the other hand, is annoying, arrogant, stubborn, and bossy, and he and Zanna butt heads at once. But when Neverwhen goes missing, they must unite to find her. To do so, Zanna will have to face feelings she'd rather ignore and trust a boy she'd rather push away. Surviving might be easy, but making friends, not so much. We All Fall Down is a short story which takes place before Book 1 of the Gravity Shattered series.