Father Walters seemed a bit stunned, as did Lucas. The silent man looked at her for a moment before his eyes crinkled in what would have probably been a smile. He took her hand again and squeezed it gently, perhaps showing his approval at the idea. 

"Just be careful," Father Walters said, "I'm sure you know what this job entails by now. I have a few resources you can use to learn exorcism, but I'm not sure where Isaac learned what he knew."

Lucas pointed to himself, insinuating that he taught Isaac how to perform exorcisms. He could probably teach Evie as well.