Timon:It's a local shrine, Deianeira often goes there to pray and seek guidance. Perhaps the oracle told her to kill my brother.
("What's next?")
Kassandra:What will you do now?
Timon:I suppose I'll try and get back to living... alone.
("Join my crew.")
Kassandra:Now that your quest for vengeance is complete, why not start a new life? I could always use a man like you on the Adrestia.
Timon:Yes. A fresh start would be good. The gods made us cross paths, after all.
She stepped closer to him and clapped him on the back.
Kassandra:Glad to have you with us.
([LEAVE] "I have what I need.")
Kassandra:I need to be going.
Timon:Thank you for bring me justice.
Kassandra:Gods be with you.
Kassandra left.
Outcome
Kassandra killed Astra, separating Deianeira from her greatest support.
Trivia
Merely accepting this quest forcibly separates Deianeira and Astra, removing them from their regular looping roam around Boeotia and relegating them to the Training Camp and Astra's Training Grounds, respectively. Deianeira is considerably weakened just from this separation but still has Cultist guards at the Training Camp. Fully completing the quest as intended will move her to the Cave of the Oracle, alone, with no witnesses or support, and seated on the ground for an easy stealth attack.
This quest is no longer available once Deianeira is killed. If she is killed while the quest is in progress, Astra will remain in her training grounds, but killing her will not retrieve the amulet or provide XP for the quest.
If the quest is completely fully and as intended, Timon can be recruited to join the Adrestia as a Legendary-rank lieutenant.