The Red Light Curse

A blizzard traps a family in a mountain cabin. Grace, a scientist mother obsessed with data, uses "thermal monitoring bracelets" to ration food. Her daughters wear them: Anna's glows green, marking her as fragile. Chloe's stays red, branding her a liar and food thief. Blindly trusting the red light, Grace subjects Chloe to escalating abuse, starvation, and freezing isolation, while coddling Anna.