It is incredibly complex- I read the book first-the movie is remarkably consistent with the book- easier to distinguish the characters...but I think reading the book, getting lost at times, then watching the movie brought it together more effectively than the reverse sequence.
The final scenes (revelation) are rarely discussed, yet there is a theme that matters in the crossover between the daughter and her father...a gender and generation merger...The sources of conflict throughout the book come together in- harmony in both characters- I missed it in the book, and the movie bridged the gap.