John Brown now is certainly not in the same position as before, so when it comes to killing, he is quite cautious. Moreover, with Grace Lopez around, he also doesn't want to kill anyone in front of her, which is why he decided to just send Robert Goodman into a mental shock with one strike.
As for doing this, John Brown's aim was to establish authority in front of Brother Bob and make the underling submit. Having such a local thug at his service would make things much easier for him in the future.
As for bringing Grace Lopez along, he just wanted her to be more aware in the future. This girl was still too wild at heart, and sometimes too careless. He always had to teach her a lesson to prevent any future troubles.
On the way back, Grace Lopez kept quiet, her head down, while John Brown drove and smiled, saying, "Are you scared?"
Grace Lopez shook her head and said, "Such bad people deserve to die anyway; I just feel a little uncomfortable."
