Zoe is NOT Evil
Let the meme end here;
"Myisha is not Zoe. Zoe is just the latest body to contain the Aspect of Twilight, Myisha was an earlier incarnation, bringing her own mortal foibles to the mix. The playful part of the aspect is still there, but it's filtered through Myisha's sensibilities into something darker and less childlike than Zoe." -- https://www.reddit.com/r/leagueoflegends/comments/8una0m/were_the_team_that_updated_aatrox_ask_us_anything/e1guav0/?context=3
Although I have to admit Riot seems completely incapable of keeping their narrative department on the same page. So who knows what is true and what is Rioters just guessing...