Why do you think Rachel is the one the Ellimist and Crayak seemed to hone in on?
I think it's down to her being the most variable, and the most able to justify to herself when she does bad things. If there's anyone who could choose to work for Crayak because they've rationalized the reasons it's bad but necessary, I think it'd be her.
To be clear: Marco and Ax especially cross tons of ethical lines that Rachel would never. But Marco knows where the line is, knows what is right... he just chooses to work around it sometimes, based on what's expedient. Marco's the guy whose first impulse is ethical, who then rationalizes himself into being ruthless. Ax doesn't have that strong a gut-level moral compass, but he does have loyalty. In spades. For Ax, the idea of abandoning his team and striking out on his own is anathema, and he would never entertain a possibility of killing Jake for the good of humanity.
Rachel, on the other hand...
Rachel is most ethical in her second thoughts. Her first impulse often misleads her.
She's angry on behalf of the victims, to the point of wanting to annihilate every yeerk alive to get revenge for them.
She's sensitive to injustice, but her definition of "injustice" can be distorted from context to context.
When Jake and Cassie are around, she's ride-or-die for them. When they're not around, she tends to get tunnel vision and lose sight of what they're fighting for.
She's willing to do the hard thing for the good of the team — as #26 proves, that includes killing Jake.
So. She obviously chooses not to take Crayak's offer. But I think that if there was an Animorph who could justify killing Jake and selling out the team because it's the only way to save humanity, then I think it'd be her.










