Beverly wanted to see Haley punished, but now that she is in charge of picking the punishment for Haley, she is being hesitant.
She saw herself in Haley. She knows she is not different from Haley, and if she were in Haley's position, she knows for a fact that she would have done the same.
Seeing Haley shivering, scared, and desperate for forgiveness, Beverly developed a sense of sympathy, not because he felt bad for Haley, but because she saw herself in Haley.
If it were she who was on her knees, begging for forgiveness, she would want to be forgiven as well.
She couldn't do it. She couldn't screw over Haley when she could have easily been in her position.
The only reason it is not her on her knees is because she got lucky for being in the right place at the right time.
If Haley had been at the reception yesterday, who knows who Amon would have approached?
