Williams said she was cast by Peele as a sneaky gambit to disorient audiences. "Jordan told me that he had always pictured me as Rose because Peter Pan or Marnie would make it easier for people to trust me," Williams noted. "I was looking for a role that would weaponize everything that people take for granted about me. So I instantly signed on to it. " Williams observed that white audiences frequently misinterpret the motivations of her character Rose. "They'd say 'she was hypnotized, right?' And I'm like, no! She's just evil! How hard is that to accept? She's bad! We gave you so many ways to know that she's bad! She has photos of people whose lives she ended behind her! The minute she can, she hangs them back up on the wall behind her. That's so crazy! And they're still like, 'but maybe she's also a victim?' And I'm like, NO! No! And I will say, that is one hundred percent white people who say that to me. " The scene where Rose drinks milk while looking at potential future victims was conceived shortly before shooting to add an additional creepy element to her character. The music used in the scene, "(I've Had) The Time of My Life", was intended to reflect Rose's emotional detachment. "There's something kind of horrific about milk," Peele said. "Think about it! Think about what we're doing. Milk is kind of gross. "