Ok, so everyone understands there are three main mountains in the book yes? Under the Mountain (Feyre), Ramiel (Nesta), so lets just assume Elain has the third mountain in the upcoming book, the Prison.
Ok, I’m sure everyone has seen this picture, it’s a big part of ACOTAR. Three mountains, and three stars.
Well, we have three sisters that each have something to do with one of the mountains (remember we’re assuming Elain).
What if the three stars represent the three Nightcourt brothers??
Feyre+Rhysand, Cassian+Nesta, Azriel+Elain.
Just a thoery I had.