The MCU has a couple of interesting ways for the Scarlet Witch to return. In Marvel Comics, the Children's Crusade story that is related to the Young Avengers, the team the MCU has been setting up for a few years, saw Wanda Maximoff presumed dead, only to be found alive and living happily with Doctor Doom. Recently, the comics revealed that a very similar variant to Elizabeth Olsen's Scarlet Witch was caught by the TVA, likely due to her rampage throughout the multiverse. Given how Robert Downey Jr. is playing Doctor Doom, I'd rather see Wanda alive through the TVA.
