After Kevin makes a reservation at the Plaza Hotel by pretending to be his dad, he goes to the front desk where Ms, Stone works at and when she asks "Can I help you?" Kevin replies "Reservation for McCallister?", to which Ms. Stone replies "A reservation for yourself?" Kevin explains to Ms. Stone that he's traveling with his dad Peter who's on business, and that his Dad dropped him off at the hotel and gave him his credit card to check into the hotel so he won't get into mischief, to which he hands Ms. Stone his Dad's credit card. She believes him and has him checked into a hotel room, although she eyes him with suspicion, and before Kevin leaves, she tells him to remind his Dad that when he arrives that he needs to come down and sign a couple of papers.
Later, Kevin was busted by Mr. Hector, who presumed that Kevin had stolen a credit card. Stone was among the many hotel staff attempting to catch Kevin and talk to him, but Kevin pranked them by using the movie Angels with Even Filthier Souls.
Ms. Stone wears her dark brown hair up in a small French Twist, wears a black suit with a coat with shoulder pads, a skirt, tights, black high heels and red lipstick, all emphasizing her femineity and elegance.