The Companions( The Sundering Book 1)

The beginning of this book confused me to no end. I had to go back and read it carefully two times to make heads or tails of it because it kept switching back and forth between the past and the present and different areas. I'm not sure still to this day what was going on except there was a little girl that had some powers that I guess was born again and wasn't really a little girl? Then there was a battle in the future and she dies and they are all in this place together? I have no clue and honestly I'm not going to finish the rest of the book because I don't understand half of what I"m reading. I apologize.