Elizabeth puts her forehead in her hand.
"It's a fair question, but there's no real way to prove this without waiting until its far too late. If even one of those things survives in the town, this problem will get much worse.
How I 'know' is by looking at the evidence, and comparing it to the esoteric tomes I've found and studied. Sure, individually, they look like collections of mythology, but collectively, they do a far better job of explaining things not understood than anything else. And while you might question the veracity of such texts, I ask you, 'How did I learn to conjure purple fire or turn into a hawk if these books are just rubbish?'
We need to act, and I think the best route is to smother him, take him out of the town, and burn him. I'll be the one to kill him, but I'll need a few people to help me carry him out, build the fire, and corroborate the story. Also, we'll need to go out of the town in force. We need to assume we could be attacked any time we're out, and the fire might attract the 'mother'."