The Morrígan
At one point in the comics an unrevealed god goes into the past and slaughters the majority of the world's Amazons, including Artemis. In this new timeline the trinity goddess The Morrígan revive Artemis from death, claiming her to be one of the Hysminai. The waters of the Underworld provided the following: Acheron cleansed the pain of death, Cocytus aided lamentation, Phlegethon burned away all love, Lethe wiped all memories, and Styx filled her spirit with hate. She is then said to be an avatar to the dark goddess Alecto, and is sent by the goddesses to find the remaining Amazons and their princess in order to seek revenge for leaving her body on the battlefield. After several skirmishes, Diana is eventually able to remove the war goddesses' influence on Artemis by using the Lasso of Truth. Once this happens, Artemis resumes her place as one of Diana's Amazon subjects. She ultimately dies against her former goddesses defending Diana.