When are we supposed to stop fighting?

[Veloran]

worthy of being alive by not respecting all life

Hello oxymoron.

Other than the obvious, notable example of Meteion sending the final days in the direction of Ethyris, did she actually intentionally kill anyone?

She has a giant graveyard of souls as her nest and has spent 12,000 years spreading despair throughout the universe.

[Necrotica]

She has a giant graveyard of souls as her nest and has spent 12,000 years spreading despair throughout the universe.

Look at Mr. Ivory Tower.

Let he who is without a giant graveyard of souls cast the first stone.

[KariTheFox]

She has a giant graveyard of souls as her nest and has spent 12,000 years spreading despair throughout the universe.

She didn't kill the dragons, she didn't kill the Ea, she didn't kill the omicrons or any of the societies in the Dead Ends. She either found them all already dead, or they committed societal suicide shortly after communicating with her. But it doesn't appear that she went out of her way to cause harm to any of them.

It was only after that - when she intentionally broadcasts that suicidal despair back to Ethyris that she's acting with any intent ( though you can argue she's following her original mission parameters. Hermes asked her to find out what people in the greater universe live for, and she broadcasts suicidal despair back as the answer because the rest of the universe as far as we know is dead.)