She can only be spotted in the elevator cube scene.

The Witch does not appear during the film.

However, in the Left 4 Dead game, the Witch is notably attracted to sugar, so its possible this could also summon her as well. Its possible that a vile of Boomer Bile is what summons the Witch to the Cabin. The Witch's most notable features are her claws it appears that her fingers have grown into her nails, extending their length into strong and sharp claws she uses to attack her victims with. Her hair is long and is a shiny silver color. She wears a tattered, pale tanish-grey bra with matching bottoms. Her wails are very loud and alert people of her presence. The Witch, as both seen in the film and in Left 4 Dead itself appears slumped over on the ground, sobbing. As a result, she has suffered several physical as well as psychological changes as her infection mutated over time. The Witch appears as a middle aged woman who has been severely mutated due to the Green Flu outbreak. This idea was eventually scrapped when the company producing the DLC went bankrupt It was placed here because the directors originally planned to release Left 4 Dead exclusive DLC maps that featured the Cabin and the Facility.

The Witch is one of the cameo Monsters from the videogame Left 4 Dead that appears during the movie, along with the Boomer, Charger, Tank, Hunter and the Smoker.

Left 4 dead witch