Warning! Spoilers ahead for FBI season 7, episode 2.FBI‘s replacement for Tiffany Wallace (Katherine Renee Kane) makes her departure from the series worse. Tiffany had been a core member of the FBI cast since season 3, making her difficult to replace. She worked mainly with Scola, called out the FBI when she saw racial discrimination, and was one of the most dedicated members of the team. However, it was clear Tiffany would not be able to stay with the NY Field Office much longer after she was traumatized by shooting Hakim, the man who killed her partner, at the end of season 6.
https://screenrant.com/fbi-season-7-episode-2-tiffany-exit-worse-replacement/