Finding Light (Illyana)

This is a story about a group of people inspired by close friends.
So basically there's people called Mystics who have powers e.g. Telepathy and there's dolls that have passive powers e.g. Foresight. These are used to help mystics hence the name dolls.
But being both, a doll and a mystic is very rare and shows they're pure and called demi-gods.
All this is hidden from Illyana a powerful mystic until she walks in on a big secret involving her friends.