Makima is a monster... she knows that she can't win against someone that doesn't have anything to lose. Now that she found someone in the form of Denji, Makima used this to prevent her from causing bigger damage.
Man this chapter is so good. Perfectly sets up how powerful and heartless Makima really is. Also ties the themes of the country/city mouse perfectly into Reze.
P.S. did anyone notice that the panels of Reze walking through the alley on pg. 6 were the same as her intro chapter?