It's Blonde Blazers branch to manage, she has top heroes and a clean image to maintain, and if she wants to cut the weakest link (to spurn Invisigal to fucking do something about her last place spot and make the Z-Team realize that Robert is there to rehabilitate them, not be their fucking friend) then that's the job she has to do.
It takes balls to fire someone for poor performance and show the others that this isn't a fucking holiday. It's an opportunity, and it can be lost.
>she's alright, meaning Prism
>those three aint' shit, meaning Coupe, Sonar, Invisigal