Trivia. Obelia can still be killed if players choose to give her the artifact, but her body does not drop any loot. Alternatively, the player can also choose to fire upon her ship and sink it without going on board to meet her, thereby killing her preemptively. ... Obelia's ship will persist offshore for quite a while.

What do I do with obelia in the Odyssey?

Objective: Return to Obelia

Head back to the surface and you'll find that Obelia has come to watch you work, bringing her massive Pirate Bireme with her. You can swim over to her ship if you want, but I'd recommend that you instead swim back to your own ship and bring it alongside Obelia's ship before you board it.

Should I kill Daphnea?

Kill Daphnae

This is considered the good ending. At the end of it, you'll get to honor Daphnae's wishes, as she dies and you become the new leader of the group. ... Once Daphnae is defeated, the other daughters of Artemis don't become hostile and the quest is completed.