This whole set up is horrifying in a number of ways, but she doesn't have time to think about the injustice and ethics of it all. This is life or death. That's something she understands instinctively.

So as much as she might not like it, Steph needs to survive long enough to figure out how to to get out of here, how to make it back home. She won't kill anyone unless absolutely pushed to, considering everyone else is just as much a victim as she is. She's killed before; but that doesn't mean it makes it easier.

But then it's upon all of them, the mad dash to the pile of supplies.