WARNING: The following article contains minor spoilers for "Now in Color," the third episode of WandaVision, streaming now on Disney+.
In the most recent episode of WandaVision, Wanda Maximoff/Scarlet Witch gave birth to twin sons Billy and Tommy, which brought back memories of Wanda's deceased brother Pietro/Quicksilver. Pietro, of course, sacrificed himself to save Hawkeye in the final battle of Avengers: Age of Ultron. As stated by Wanda's actor Elizabeth Olsen, the birth of her sons was what triggered these memories, but it's only the start of her memories returning.
"The experience of having just gone through real birth -- like a real birth experience, because they're real, breathing creatures that she's given birth to -- I believe that's what has sparked this memory that was squashed," Olsen explained to TVLine. "She starts to really connect back in with these memories that aren't on the surface. And we will continue to watch her discover more of those kinds of moments."
However, given that Wanda expelled Geraldine -- in reality Monica Rambeau -- from Westview after she mentioned Pietro's death and Wanda asking Geraldine who she really was, it seems that Wanda would rather forget what happened to her twin and continue living in the sitcom world she and the resurrected Vision currently inhabit.
Written by Jac Schaeffer and directed by Matt Shakman, WandaVision stars Elizabeth Olsen as Wanda Maximoff/Scarlet Witch, Paul Bettany as Vision, Randall Park as Agent Jimmy Woo, Kat Dennings as Darcy Lewis, Teyonah Parris as Monica Rambeau, and Kathryn Hahn as Agnes.
Source: TVLine