Notably, Andi does not do anything approaching what Bandi did until Bandi does it.
What you claim as "notable" is, once again, unsupported and nonsensical. Andi has shouted orders and insults at Bandana since she showed up in this scene. You're choosing to massively overweight Bandana leaning toward Andi as she tells her to do her job.

Yes, Andi was righteously enraged that Little Miss Junior Captain, the kid she used to babysit, dared to shout orders at her and criticize her. Thus, in her rage, she chose to hit her over the head, later bragging that Bandana's failure to obey her made her "something that wasn't working" that she had "fixed" by hitting her with a wrench. Mysteriously, that is not a justification, and nowhere but in your mind did Bandana shout, "Suggestion: Attack me when I turn my back!"