Right after he throws Caleb over the balcony, he has ammo in his weapon and Ma Ma is there pretty much unarmed. Why didn't he just execute her right there for attempted murder of two judges plus the murder of dozens of civilians with the miniguns?
shareShe's across the entire apt complex. It can be presumed he didn't feel confident being accurate at that range, not to mention engaging in a long distance firefight where there's multiple assailants and multiple miniguns that may or may not be still usable.
At that point, he also suspecting that is something going on here beyond just a gang war, so he wants to prioritize figuring out why Ma Ma is trying so hard to kill them.