What does that have to do with what Jake did to Mia?
If you pay a guy to drive to the store and buy a bottle of milk, and he runs over someone with his car, you are not a murderer. Because it isn't your fault he ran over someone with his car.
Ella is only guilty of things she actually did, or directly ordered, at most you include things a reasonable person could deduce would follow from her orders.
Which means Ella is responsible for ordering Jake to go after MC and Darryl. But not responsible for what Jake did to Mia.
You are engaging in tribalism. In your mind there are only 2 sides.
Side/Tribe A: Ella is Satan
Side/Tribe B: Ella is Saint
You saw me disagreeing with a point made by someone in Side A (they claimed that Ella is responsible for what Jake did to Mia).
In a fit of tribalism you decided that by daring to disagree of someone from your Tribe, it means I am a member of the only other Tribe in existence, Side B and thus are now straw-manning me by falsely attributing a bunch of claims to me that I did not make but allegedly other members of my Tribe did.
Stop doing that please. There are more than just 2 extreme sides to an issue and not everyone perfectly aligns with whatever "side" you think they belong to. Address what I actually said, not something others have said.
As for what Ella is...
She isn't out there killing people for fun
She is putting people in danger to prepare humanity for survival against what seems to be certain extinction.
Rather than her being "Evil". She is more of a "Renegade".
There are shades of Grey here
Yeah, not really Ella's to blame for Mia, decision to brainfuck her was Jake's one and only, and going with "she led to the situation in the first place, so she's to blame" opens a can of worms that leads to immensely stupid claims, like blaming first man/woman on earth for all the shit that happened.
Neither it's a story for preschoolers, Ella is not a cartoonishly evil villain that does what she does becasue "I'm evil_TM", like everyone else in the story she is a complex character that has angles to it. But about that falsely accusing someone over something they did not claim - we do not know if she, to quote, prepares humanity for survival against annihilation. It might be the case, but we have no confirmation of this - Ella saying that, without anything else in game to really support it, is no proof. She is a known liar, outright stating things that are not true and easily debunked in 10 minutes of play. For all we know her plan might just be amass support of superhumans she made/swayed to her side, bring/hasten the apocalypse and rule as a king of the ashes that are left. Abused children are often, when they grow up, trying to build their self-worth on status and influence just to feel better for the pain they experienced, or use it to have the same leverage to abuse others without consequences, as seen from the perspective of their younger selves. Maybe, I do not know. Maybe she wants to bring the Apostles at person, not through avatars, to be rewarded with some turbo power boost? Maybe, it's all speculation.
But that evil/renegade and not killing for fun part? Not really true. I mean, maybe not for just fun, but she murders a hobo guy for no good reason but being mildly pissed at him. And showing off what she can do to MC, which might actually be just for fun. I don't know how many innocent lives must be taken directly, or make choices that directly lead to deaths while knowing that, for one to be considered evil, but I'd assume it's above zero. Again, she's not a one-dimensional brick labeled "evil" and that's it, the are grays here, but this is just a part of her. Like the twin slurping of Eisheth - she can, she likes the taste, so she kills.