How Lady Sif finally returned to the MCU

In Loki Episode four, “The Nexus Event,” we see the return of Jaimie Alexander as the Asgardian warrior Sif. This character apparently never disappears, despite being written outside of the off-screen MCU. (And later ignored in several later projects.) You just can’t keep this badass immortal warrior. Marvel studios In Loki, Sif appears as part …