"Peter... they're all going to die anyway... the one thing that was made clear is that only one person is allowed to survive this whole ordeal. Only one kid on this entire island will be left alive..."
He found a large branch, it looked like it could withstand quite a bit of assault, and he looked at the double doors that made up the only entrance to the hospital.
"If they're in a dangerzone, their collars go off... it'll probably kill them instantly. They'll feel no pain, and their suffering will end, while ours will be prolonged."
He picked up the branch and made his way to the door, ever slowly, but he did not put the branch between the two handles of the double doors.
"Plus, that means a group of people less likely to try and kill us... You're the only one I trust here... if you agree with what I have just said..."
He put the branch, which barely fit, in between the two handles, which would keep anyone who is inside INSIDE, unless they applied enough force.
"...Then you will leave them. If you don't, you can take the branch out, no problem. They still have a chance to get out, if they're willing to work together and bust this door down... or jump out a window..."
He went towards his things and gathered them.
"These are the way things are Peter... heartless as it may seem, I just want our survival."
Kristey stood by, and saw his logic. It made sense to her, but at the same time, she couldn't bring herself to harm someone if they didn't already deserve it. What he was capable of was absolutely evil.
While he was gathering his things, she made sure that she was not seen by Andi or Peter... and ran. Anywhere but the hospital. Anywhere but where Andi was.
That's when she knew she couldn't kill him.
(Kristey continued in We Survive by Friendship
((I may get into some trouble for this, but...))