"Maybe I am the authorities," he said rather than actually answering the question. Eli never would leave the fate of anything in the hands of the Ministry, certainly not the Department of Magical Law Enforcement. And to some extent his actions could consider him the authorities, he might not be out in the field, but he could help figure things out for those people.
"And I don't have any mother or brother to compromise me emotionally." Even with Samara having nightmares too, Eli wasn't any less rational than he would be otherwise.