Hestia doesn't smile. She hasn't smiled since the day Tim vanished.
As though her own smile was sucked into Tim's, the day it broke wide open.
Joker can't get away with it Bruce had to pry her fingers off from Joker's throat. He even allowed paramedics to revive him (But Bruce didn't revive him, and to the batboys and girls, that meant something).
Hestia has been banned from visiting Arkham. Joker can't be held in super strength preventative facilities because he isn't blessed with the skill. It also means he isn't protected from the people with said skill. People like Hestia and Kon biting at the bit to tear out his intestines and pull them out through his nose with a crochet hook.
She has already had to replace the sidebar to Tim's cot twice because she has bent it out of proportion, struggling to not imagine Joker's throat under her fingers again.
She killed him, but Bruce didn't report her.
She wants to see Joker grin now with the bruises she left around his throat.