Jonas doesn't think we should trust her. And I know we can't- I mean, it's Lucy- but I'm not sure we have a choice. The doctors aren't getting anywhere. And The Order needs Lauren to survive just like we do.
Of course, who knows if Lucy even has this antidote? She has made a habit out of lying to me. She was there every day the Order had me, and I don't think she ever told me one little sliver of truth. When she needed me to be good, she would say, "The more you co-operate, the quicker you can leave." But when I would misbehave, she would tell me that Daniel and Jonas were already dead, and I would never see them again, even if I got out. Basically, their chances of being alive were directly proportionate to how well I behaved myself.
She knew exactly how to play me. That's her job.
I guess my point is- I know it's a bad idea, but I don't think we have any other options.