Pussy has blinded the masses.
Not really.
It's just that normal moral questions kind of fall by the wayside when there is a problem of the entirety of humanity being killed, eaten, raped and/or turned into barely aware meat puppets.
I'm sorry, if a million people have to have shitty lives and then die horribly for the rest to have a fighting chance... then there is a moral obligation to at least try and save as much as you can, give everyone as much of an edge as possible.
But the queasy feeling you get when you think about it that drives you condemn her is not by accident. This is a black and black choice where you have to choose between 'horrible and it's your fault' and 'absolutely apocalyptically bad but it's not your fault'.
Ella's actions
are reprehensible on a good day, but only if you consider them in a vacuum.
And they neither exist in a vacuum nor do they exist in a world where we have her full goals and the full stakes or alternatives.Yet.
In that regard your condemnation is, from a logical point of view, just as silly as outright taking her side. The only thing it does is reveal your character as either hopeful, horny and/or forgiving or (self-)righteous, highly concerned with doing the right thing and just.
We don't know yet and the only thing we're doing is reading the the tea leaves. And that really feels like a waste of time to me.