I'm not good enough of a person to do something altruistic with one of those things, and hopefully not evil enough to want something for myself with murder as its cost.

[That's such a roundabout way of saying it was the monster. Truthfully, part of the reason why Erin is currently in a state to talk is because she's having an intensely bitter internal battle with the monster out of absolute spite, for daring to get her in this situation]