n
The way they were begging her to admit fault and apologize, like they were scared to go in.

Andy probably would have forgiven her if she would admitted she wanted to get back at Kandi and did wrong. But she dug her heels in and refused to admit anything, or to show a bit of emotion. It's like it finally dawned on him how fake she is and how bad she is for the show. She denied him an epic emotional breakdown and redemption plea. She's done.
Meanwhile, Phaedra got outsmarted by the town dunce, Porsha. Her fake tears and deflection effectively got all the blame on Phaedra. Phaedra didn't even realize she got played.