Lucifer_Mors
It is the world trying to keep the plot the same and unaffected by any changes caused by Lucifer. Just like Emma said, it's very delusional of them to see their daughter as this perfect angel and from the amount of "love" they have for her there is no way they don't keep tabs of her activities out in the open or in secret. But like I said, the plot of the world is most likely the reason. Thanks for the Chapter Author.