to start with, this isn't actually a position that satoko is unused to being in. she's used to leveraging her relationships and skills in order to get people infected with a disease that makes them act a certain way, so she's going to find this 1. very easy and 2. surprisingly fun.
and then she'll expand from there. i think after they start doing the quarantine she's going to end up faking her own death to make people think she's cured now
if it seems like her cover is blown at any point she'll move from manipulation to just outright violence, to just. killing people if they prove uncooperative to that too.