It's not that there aren't any insiders; the Angel Mother and a few of the Highnesses know what happened, but the problem is, given her status, even if she ascends to Legend, she doesn't have the qualification to question the other party, let alone any need for them to recount the entire process to her.
"So be it!"
Although this group of fairies knows nothing, Noah hasn't seen any significant loss so far, aside from his residence suffering what could be described as catastrophic destruction. At least, distant Elisium remains prosperous and orderly, unaffected by the dilapidated ruins in the mountains.
This alone indicates that although there was an accident, the problem is not severe, the impact is limited, and judging by the current state, the issues seem to be technically solved.
"Daddy!"
