Alternatively, maybe "Nadine" refers to a different franchise entirely, but the name doesn't ring a bell in other contexts. So, focusing back on FNaF: Help Wanted, Abby Winters is a main character. If there's a "Nadine" character, perhaps there's a specific event or content patch that added her, and the guide is for obtaining or using her exclusive items or storylines. However, I don't recall any official character named Nadine in the game. Alternatively, it could be a fan term or mod.