>>279858074 (OP) It shows how utterly terrified they were of a person that could kill at distance with no clear tell; had it not been due to hubris Kira would had never, in a million years, be caught.
They didn't understand how such a thing was possible so limiting any contact she could had with the outside world was necessary to prevent her from killing them all, or even making them do what she wanted AND then killing them (in their heads)