"we're casual acquaintances" -konrad
"Rushes to help Leslie at the first inkling of news" - also Konrad
For everyone bashing Leslie's intelligence, in the story, what does Amora do that would cause her suspicion? Time and time again, Leslie is shown to trust people because of people's eyes. She saw fear, but she never saw malice in the maid's eyes. In a household with no love, Amora is Leslie's closest version to am old friend.
Adults are blind even when their family tell them their "friends" are taking advantage of them, what makes you think an 11-yo, who never had a friend betray them, gonna do?