As Parris later illuminated, filming the scene proved physically challenging because it involved displaying the literal conversion of her cell structure. To do this, Parris had to re-shoot the same action in different outfits, conveying the passage of time, while tethered to a harness that pulled her back in a swift motion. In the episode, multiple voices from her past can be heard speaking to Monica as she travels through the Hex. When her character finally finds Wanda, the angry superhero responds by violently using her telekinetic abilities against Monica, but her new powers enable her to land on her feet. According to Parris, this was the first moment of filming where she truly felt like a superhero, both in terms of shooting and storytelling.
Throughout WandaVision, the show has carefully explored the simmering tensions of grief and loss via a superhero lens. While many of the characters harbor otherworldly powers, they also must confront the incredibly human dilemmas of pain and regret. As the current episode indicates, Wanda is far from the only protagonist struggling with trauma. Monica’s newfound abilities, along with her capacity to relate to and sympathize with Wanda, set her up as a compelling foil and, hopefully, friend to the Scarlet Witch.
Originally from https://screenrant.com/wandavision-monica-rambeau-superhero-powers-teyonah-parris-response/