THIS IS JUST MY OPINION. I believe they’ve already averted the crisis of archies life by convincing his sister that he’s on her side and to bring the kid in to the family WITHOUT PRESSURE aka don’t give him the throne when they find him. Archie also stated in (i forgot what chapter) that the Sherlock Holmes book helped him find the kid so I think that arc is over. I think the story is headed towards revealing her mom as the author of the book and that she went back to archies time somehow when she left Cordelia .So they needed to set up Cordelia and her moms back story to make it make sense later. But that’s just my opinion. Hope that helps
it's funny how none of them realized that they both had the "Gray/Grey" (?) surname
╮( ̄▽ ̄)╭ and... whatever happened to the manuscript she received? she started talking about a bunch of things which shifted the real purpose of the conversation, which is... to help archie to not die at the hands of the sister right? Σ(  ̄□ ̄||) so why are we suddenly getting a glimps of her past? i'm getting confused with the story #-.-)