I think something is bugged in my game.
I finally got through the dark forest to the Treomar library, and my quest says Callisto told me to find a book inside of the library. I'm inside the library now - I walked down and killed the acolyte, then infront of me is a giant circle pit, and around it, a bunch of activation crystals. I picked them all up, but nothing happened (I assume something is supposed to since the quest marker is ontop of the first crystal you get to).
Now, I walked down the stairs and through the different book rooms, and at the very bottom I found an iron gate and three strange systems - one is broken and the other two have switches. I pressed the two switchs and the top rose up, but the iron gate is still closed so I can't figure out where to go from here..