Is there a possibilty for Elain to be the betrayer?
Base of blurb there will be betrayals that will split the IC hence splintered harmony. We know Rhys wasn’t happy with Nesta’s decision of helping Bryce. What if Elain betrayal is what push it? She might want to be human again and got manipulated by Koshei instead?
I know some think its Gwyn, but if she is the betrayer it will only hurt Nesta and Emerie. It doesn’t really split the IC. Some say it might be Mor, but she would have already done it while Rhys was under the mountain. Some say it will be Amren but she was willing to sacrifice her life in Hybern war so I don’t see it. Plus most reader want her to stay dead so her betraying wouldn’t land much.
Some say it might be Azriel due to him being angry at Rhys for stopping him to pursue Elain. Again, I don’t see it. I actually don’t think he was still angry at Rhys at all. He did follow Rhys order, he was happy for Rhys when the baby arrive, and he was angry at Nesta for Rhy because of the Bryce situation.
This leaves me with Elain. She’s the only one that can create an impact and leave IC split. Rhys will try to do what best for the Night Court. Feyre will have her sister’s back. Nesta will also have her sister back. Mor and Amren will have Rhys. Both Cassian and Azriel will be split. We might even get the sleeping beauty retelling for Elain on this. This might also what sets the adventure to Dusk and Autumn.