Yvonne has a very elongated nose, a pointy chin, and thin lips. Wrinkles around her mouth, eyes, and neck show her age. Her brunette hair has front bangs with the rest in a bun. She is seen wearing a pink button-up long-sleeved shirt as well as a black pink-striped sweater vest. She also wears a gold earring on her left ear.
Although she is not seen actually attempting to "fix" any child's behavior, the fact that she is a nanny, and a good enough one to be on Nanny 911, implies that she is strict but compassionate, easily "getting through" to kids and correcting their behavior.
- The show she was featured on, Nanny 911, is a real life television show.
- She is a parody of an actual person of the same name: Yvonne Finnerty.