Reading Danielle Cohn fanfics is like chasing a ghost sometimes – you see traces everywhere but the main body's always shifting. Most of the serialized, chapter-by-chapter stuff for her seems to migrate to where the teens are, which right now means apps like Wattpad and Fanfiction.net are surprisingly not the hubs. You'll find dedicated writers posting updates primarily on Quotev and, weirdly enough, TikTok-inspired story apps like Dreame or Radish, though those lean more toward original fiction with her as a face claim. The real-time chapter drops happen in Discord servers and Twitter threads, but you gotta be in the right circles to find those links. It's all very ephemeral.
What I've noticed is that the platforms hosting 'regular' updates aren't necessarily the big archival sites. They're the social ones. A writer will build an audience on Tumblr with a masterlist, then post chapter links to their Wattpad as they go, but the most active commenting happens on the Tumblr posts themselves. It creates this fragmented experience where the story exists in pieces across the internet. I miss the days of a single, dedicated author page on FFN, but I guess this is just how fandom moves now – following the update is part of the community fun, even if it's a hassle.