Who is Beatrice in the Lemony Snicket books?

Beatrice is one of the three Baudelaire children, the main characters in the Lemony Snicket's A Series of Unfortunate Events book series. She is the youngest of the three, with older siblings Violet and Klaus. Together, the Baudelaire orphans face a series of unfortunate events and confront various villains after the demise of their parents in a mysterious house fire.