The colleagues were just there to see what was happening, checking if there was any way they could help. They didn't quite understand why Shi Jia had left so abruptly. They had initially been skeptical upon hearing about the leak of the proposal; they wanted to see with their own eyes if it was true. Once they arrived, they grasped the situation immediately without even delving into who was right or wrong.
It seemed highly likely that the incident was real. Now that Shi Jia was begging them, what could they do? They were just minor employees there to work; what notable thing could they do? Their power wasn't as great as the boss's. Should they beg for mercy on her behalf? If begging worked, she could just do it herself.