World of Silver by Tia’Leon Popham

Forced into a system full of lies and deception, Grace Ward tries to claw her way to the truth, stopping at nothing to get her freedom. The world is uninhabitable - roaring flames and dark skies. Life is only manageable if everyone stays inside the building, or so they thought! As the puzzle pieces start coming together, finding the truth is one long road that Grace is ready to follow.