Tumbler by Brand Gamblin

Libby Carter wanted to get away from it all, so she took a job mining asteroids as far out into the inky blackness as possible. However, her escape turned into a trap, leaving her stuck in indentured servitude, living on a tiny rock in space. As she tries to dig herself out, she gains friends and finds adventure. Cave-in rescues, planetary collisions, and other mishaps keep her new family fighting to stay alive.