Fear the Walking Dead showrunner Ian Goldberg confirms that season 8 of the long-running spinoff for The Walking Dead will reveal how Madison Clark survived her supposed death in season 4. In Fear the Walking Dead season 4, episode 8, Madison presumably died in a fire at the Dell Diamond Baseball Stadium, sacrificing herself so the rest of her group could survive. However, season 7, episode 16 revealed she is alive and working for the mysterious PADRE.
https://screenrant.com/fear-walking-dead-season-8-madison-survival-answer/