Her loss is a major motivator for her husband Mark Scout to begin his job at Lumon corporation.
And so we wanted this character that we could really hide in plain sight, where she would make sense as just an interesting kind of strange part of, piece of the Lumen furniture.
"[6] According to Erickson the writers tried out a variety of character ideas for Mark's wife on the severed floor; for a long time they developed her as a traveling vendor who sold office supplies to the different departments, similar to an old west peddler in the style of a prospector.
[7] Erin Qualey of Vulture wrote that the character "evoke[s] a very strange yet warm presence" and "she seems like she was pulled right off the assembly line at Westworld.
"[8] Qualey described the reveal of Mark's wife Gemma being present on the severed floor as Ms. Casey as an "emotional gut punch.
"[9] Reviewer Mary Littlejohn of TV Fanatic wrote, "It undermines the whole throughline of Mark's grief — or, maybe in some way, makes it more tragic.