As it turns out, the one-off antagonist from last season didn't die after all, and she reveals the mechanics of her return (literally) when she arrives with Boba Fett on Tython. She tells Din Djarin that Boba saved her life, replacing her abdomen with machinery, and that she's working with him now. She and Boba join the mission to rescue Baby Yoda, and while Boba Fett flies off in his ship after the main team infiltrates Moff Gideon's ship, she stays with the team.
After the battle is done, though, she reunites with Boba Fett and helps him take over Bib Fortuna's palace (which used to belong to Jabba the Hutt, Boba's old employer), where she's last seen casually lounging, presumably thrilled at the news that she's most likely headed to the Boba Fett spinoff.