No matter how much heartache the MCU throws their way, one thing is abundantly clear:
In the comics, while White Vision cannot feel love for Wanda, he always respects their relationship as man and wife.
Vision had only just been created , given a mind, and empowered by the Space Stone. He helped protect her once Scarlet Witch and Pietro had fully joined the Avengers in the final battle in Sokovia. She saw his heroism in this battle and fell in love with him as she got to know him.
Vision is a "living" android (or "synthezoid" as Hank Pym has described him) who has a full capacity for emotions as well as emotional growth.
I think as soon as Wanda controlled the Mind Stone and escaped, Vision grew a strong affinity to her. Not only is she the only person that could possibly understand how the mind stone affects him (given her circumstance), she also has the ability to control it which is something he desires more than anything.
Meet the happy family. In the comics, Wanda and Vision get pregnant through magic — since Vision is a robot, that's seemingly their only option. They have twins named Thomas and William.
The Russo brothers, who directed Infinity War and Endgame, once said that Wanda intentionally dropped the accent because she was training to be a spy and the accent would give her away.
Wanda (Elizabeth Olsen) and Vision (Paul Bettany) were always emotionally connected because they were both entangled with an Infinity Stone called the Mind Stone. Wanda was exposed to it when she was being experimented upon by HYDRA, and Vision had it living literally inside his head.
Once Hank Pym restored Vision's data he became more subdued, but his differences were so great that Scarlet Witch had difficulty interacting with her now-reconfigured husband. The friction between them grew, slowly collapsing their relationship over time.
For some reason he's not in her world. I always thought of her as more of a domestic Wanda. They got divorced. They're separated.
As she learned more about her powers and the role of a hero, Wanda found herself attracted to the android Vision and the two soon declared their love for each other, a situation Pietro found intolerable.
Since Avengers: Age of Ultron happened in 2015, both Wanda and Pietro were 26 years old when he died and she returned to the United States to become an Avenger.
In 1974, Englehart expanded Wanda's powers by having her learn witchcraft from Agatha Harkness. The Vision and the Scarlet Witch married in Giant-Size Avengers #4 (June 1975), the end of the Celestial Madonna story arc.
Wanda was only interested in getting her kids back, but they were never with Vision, who likely would have been their father as he was in WandaVision. Olsen also revealed to Collider that the decision was made for her character to only seek out a universe where it was just her and her kids.
She can't have her happy ending by being the Scarlet Witch. The Witch was prophesised to rule worlds, not raise a family. Had she succeeded and stolen her sons from another universe, they would have been, for all intents and purposes, captives.
As to why Wanda didn't search for Vision in Multiverse of Madness, it could simply be that the android is dead in every universe. Wanda could have already searched the multiverse for a universe where she had everything she wanted, a universe with the love of her life and her two children.
In the comics, Vision and Wanda married in 1975's Avengers #4 and even got their own spinoff comic, Vision and the Scarlet Witch, in 1982. They fought alongside the Avengers and had twin boys named William and Thomas.
Compared to the threat of a Sinister Strange in the making, the Scarlet Witch was only grieving on her terms. Instead of helping her with grief, the sorcerer became an obstacle in her way, which fueled Wanda's rage and made her killing more ruthless than ever.
Because she knows it wouldn't be real. Even if she could recreate he kids and Vision outside of a Hex she would know it wouldn't be real.
It takes another Wanda to truly understand the pain that she is in and the love she feels for her sons. After all the destruction the Scarlet Witch caused, Earth-838's Wanda ends her tirade with a single line; "Know that they'll be loved."
Five years later, Wanda is restored to life and joins the Avengers and their allies' battle against an alternate Thanos, who came from an alternate universe, and his army, during which Stark sacrifices himself to win. A week later, Wanda attends Stark's funeral and reunites with Barton.
Wanda murdered the man she loved unwillingly. His death amounted to nothing. When she turned to the country that her love and she protected, they mined him for parts and left her for the proverbial scrap heap.
It could be reflective of her journey towards assuming the role of Scarlet Witch. (More on that in a bit.) Or it could denote her closeness to Vision; she's in a relationship with him by Infinity War, and Vision's costume is red. Regardless, the red appears to be her signature hair color going forward.
She no longer wears the dark eyeliner and lipstick to look like an edgy teen. In fact, she doesn't wear much at all. Just some face primer and a lot of foundation to tone in the skin and hide the blemishes. They made her look more mature.
Fans might have a hard time remembering this, but at the start of her MCU journey in Avengers: Age of Ultron, Wanda Maximoff aka Scarlet Witch, played by Elizabeth Olsen, had a very heavy foreign accent, since she is supposed to be from the fictional land of Sokovia, in Russia.