One of The Walking Dead's upcoming spinoffs could answer some questions surrounding a big season 9 Maggie mystery. The Walking Dead: Dead City's Maggie, played by Lauren Cohan, has been a staple character in The Walking Dead franchise since her joining the main series in season 2. Following The Walking Dead's series finale, Maggie and Negan headed to New York for their spinoff. Much of Maggie's time in The Walking Dead: Dead City season 1 involved a vengeful mission to bring Negan to an ex-Savior, the Croat, in exchange for Hershel.
https://screenrant.com/walking-dead-city-season-2-maggie-timeline-mystery-solve/