Becky, played by Aryana Engineer, is a clone of a young deaf girl, residing in the "Suburban Raccoon City" environment of the Umbrella Prime facility.
In Resident Evil: Retribution, she is first introduced as the deaf "daughter" of a clone of Alice and her "husband" Todd, a clone of Carlos Oliveira. During a "bio hazard" test, Becky lost her father, while her mother hid her; unknown to Becky, the Alice clone was killed by the zombified Todd.
When the real Alice arrives with Ada Wong, Becky mistakes Alice for her mother; Alice decides to take Becky along despite Ada's objections. Mostly unknowing of the truth about her existence, Becky followed Alice and her comrades. When an Uber-Licker kidnapped her, Becky was rescued by Alice; however, they unfortunately had to escape through the clone storage room. Partly realizing the truth, Becky asked Alice if she was her mother; Alice responded that she was now. They were rescued and taken with Ada, Leon Kennedy, and Jill Valentine to Washington DC, where the last of humanity had established their base in the White House. When Albert Wesker ultimately betrays the survivors it is presumed that she is killed along with the others after he destroys the White House, leaving only Alice alive.