To Spencer Reid, his older sister Y/N has always been a force of nature—loud where he is quiet, instinctive where he is analytical, reckless in ways he’s never allowed himself to be. As an ER nurse, she lives in the aftermath of chaos, patching people up with steady hands and a sharp tongue, carrying herself with the kind of confidence that comes from surviving long shifts and harder lives. She’s fiercely protective of Reid, unapologetically stubborn, and far too wild for the neat boxes he prefers the world to fit into.