Tessa looks innocent, but Mountain Eagle clearly understands that once he agrees to her, he will definitely have to take the blame using his newly acquired volunteer Police identity.
Currently, all of Bangkok police's efforts are focused on combating gangs, and conflicts have arisen with government agencies over the definition of a shooting incident.
However, this is not a reason for Tessa, the police princess, to lack support; pulling a team to serve Tessa is nothing for her mother and brother...
The only explanation is that her mother and brother know something about Basong's daughter's disappearance, so they don't want Tessa to get involved.
One can tell with their knees that those who can intimidate someone of Tessa's mother's stature must be some tough characters!
Tessa probably knows a bit herself, so she wants to solve the problem on her own...
This is how identity and position bring different perspectives in thinking...