Meero is changed. I think for the first time she was scared. No, she was absolutely terrified out of her mind.
She used to being in complete control and being in a position of power. They've been building it in how she handled Blevin and her interactions with Bix and everyone else. You see that really well in this episode in how she orders the imperials on Ferrix around and how she talks to Partagaz. She's also fearless, as she walks around the city with a single escort and goes after Cassian herself with just two guards. Nothing scares her because she'sj complete control. Then all of a sudden she's in the crowd, unarmed, there's chaos, and she's powerless. She realizes the illusion of her power and authority, and how the rebellion and these people she's been looking down her nose at can destroy it in an instant. She's kind of a metaphor for the empire that way.
Syril brings her back and saves her, and instead of being short and angry with his impertinence, she thanks him. With all of her ISB cronies, dark troopers, storm troopers, and all of the other imperials there, it's lowly Syril who rescues her. She realizes she's underestimated and rebuffed him and been blind, and her life has been turned upside down. No way she's killing Syril after that.
