Blood Prodigy

AU Sequel to Blood Marionette! After killing Toph while under the Dai Li's control, Aang and Sokka abandon Katara, leaving her alone and in tears, a broken soul. Azula finds her and takes her in as her sister but the damage is done to Katara's psyche and she slowly goes insane... Hints of TyZula, Azutara and KaToph. Official pairing will come later. Written with RosenKruz!