The Boutique Banshee possesses a semi-transparent, ghostly form that can phase through clothing racks and display cases, emitting ear-splitting screams that disorient survivors and attract nearby infected. She is vulnerable to bright lights, which can temporarily disperse her essence, and moves with erratic, floating motions enhanced by comic book-style motion blur effects. Her presence causes temperature drops and flickering neon signs, aligning with the mall's deteriorating infrastructure.

She haunts boutique areas, deterring survivors from scavenging high-value resources like clothing or jewelry by creating zones of auditory and psychological fear, forcing players to navigate alternative routes through the infected mall.