I really don't get why people think she's some kind of Bloodknight, when her last narrated book had her refusing to becoem Super Rachel, and crying over whether or not to kill David. That happened during the final arc.
I know a lot of people didn't like 48, saying it doesn't show her character well, but I don't think it's because they expected her to gleefully accept Super Rachel powers, and crush David like a bug. Did they?
Very true, and I think that it is telling of Rachel's character that she didn't accept Crayak's offer. But I also think that it is
just as telling that she even
considered it. I believe that Rachel is the only one of the Animorphs who would have taken as long as she did to decline the offer.
Cassie, of course, would have instantly seen it for what it was, and refused from the start.
Jake might have briefly considered it, but I don't think he would have been as swayed by the raw power as Rachel was. If he would have considered it, it would have been purely from a rational standpoint, that it would help the Animorphs win the war faster.
Marco probably would have considered it almost as long as Rachel did, to be honest. But his motivations would have been extremely different. He wouldn't have been addicted to the power. Like Jake, he would have seen the rational side of it. He's the one who is willing to take any morally-ambiguous risk in order to win, after all. But I think that, in the end, even Marco would have declined, too, because he would have seen Crayak's side of the deal and what he was getting from it, weighed the options from that standpoint, and realized that this was not a good choice.
Tobias would have refused it almost as fast as Cassie did, I think. He would have seen what Crayak was trying to do, and would have taken any way out of that deal, even if it meant the risk of being stuck as a rat.
Ax wouldn't have gone for it, either. Granted, on the one hand, he's pretty dedicated to winning the war. So he probably would have, very briefly, considered the offer. But he would have seen it as a heavily dishonorable decision, and would have pretty quickly refused. Then again . . . he's done other things that could be considered very dishonorable, in the effort to win the war. So I don't really know what he would do. Maybe he would have thought it over like Rachel did. But I'm certain that he would have decided against it in the end.
The point is, in any case, that NONE of the Animorphs would have taken Crayak's offer, so that's not really a very valid point in Rachel's favor.