Who is Violet Baudelaire from The Slippery Slope and what is their importance?

Violet Baudelaire is the oldest of the three Baudelaire siblings. She is 14 years old. Along with her younger brother, Klaus, and younger sister, Sunny, she has been through a series of adventures since the apparent death of her parents in an unexplained house fire. Violet's skills include the ability to improvise, incredible foresight, and problem solving abilities.